Publications

2023

Dipolar shielding

P. Barral, M. Cantara, L. Du, W. Lunden, J. de Hond, A.O.Jamison, and W. Ketterle:
Suppressing dipolar relaxation in thin layers of dysprosium atoms
Nature Communications, arxiv

J.J. Park, H. Son, Y.-K. Lu, T. Karman, M. Gronowski, M. Tomza, A.O. Jamison, and W. Ketterle:
Spectrum of Feshbach resonances in NaLi + Na collisions.
PRX, arxiv

T. Karman, M. Gronowski, M. Tomza, J.J. Park, H. Son, Y.-K. Lu, A.O. Jamison, and W. Ketterle:
Ab initio calculation of the spectrum of Feshbach resonances in NaLi + Na collisions.
PRA, arxiv

Atomic physics on a 50 nm scale

L. Du, P. Barral, M. Cantara, J. de Hond, Y.-K. Lu, and W. Ketterle:
Atomic physics on a 50 nm scale: Realization of a bilayer system of dipolar atoms.
Science, arxiv

I. Dimitrova, S. Flannigan, Y.K. Lee, H. Lin, J. Amato-Grill, N. Jepsen, I. Cepaite, A.J. Daley, and W. Ketterle:
Many-body spin rotation by adiabatic passage in spin-1/2 XXZ chains of ultracold atoms.
Quantum Science and Technology, accepted; preprint, https://arxiv.org/abs/2301.00218

Magnetic trapping of molecules

J.J. Park, Y.-K. Lu, A.O. Jamison, and W. Ketterle:
Magnetic trapping of ultracold molecules at high density.
Submitted to Nature Physics, preprint, https://arxiv.org/abs/2211.11120

K.T. Geier, G.I. Martone, P. Hauke, W. Ketterle, and S. Stringari:
Dynamics of Stripe Patterns in Supersolid Spin-Orbit-Coupled Bose Gases.
Phys. Rev. Lett., accepted; preprint, https://arxiv.org/abs/2210.10064

Lattice induced Feshbach resonances

Y.K. Lee, H. Lin, and W. Ketterle:
Spin dynamics dominated by superexchange via virtual molecules.
Submitted to Phys. Rev. Lett., preprint, https://arxiv.org/abs/2208.06054

First molecular Feshbach resonance

J.J. Park, Y.-K. Lu, A.O. Jamison, T. Tscherbul, and W. Ketterle:
A Feshbach resonance in collisions between triplet ground state molecules.
Nature 614, 54–58 (2023),https://doi.org/10.1038/s41586-022-05635-8
pdfMIT Press ReleaseNature News and Views
Chemistry WorldPhysics World

2022

Steering chemical reactions by magnetic fields

H. Son, J.J. Park, Y.-K. Lu, A.O. Jamison, T. Karman, and W. Ketterle:
Control of reactive collisions by quantum interference.
Science 375 , 1006–1010 (2022), https://doi.org/10.1126/science.abl7257
MIT Press ReleaseU Waterloo Press Release
Science PerspectiveChemistry World

Bosonic stimulation in light scattering

Y.-K. Lu, Y. Margalit, and W. Ketterle:
Bosonic stimulation of atom–light scattering in an ultracold gas.
Nat. Phys. 19 , 210–214 (2023), https://doi.org/10.1038/s41567-022-01846-y

Catching the Bethe phantom

P.N. Jepsen, Y.K. Lee, H. Lin, I. Dimitrova, Y. Margalit, W.W. Ho, and W. Ketterle:
Long-lived phantom helix states in Heisenberg quantum magnets.
Nature Physics 18 , 899–904 (2022), https://doi.org/10.1038/s41567-022-01651-7

The Spin Mott State

J. de Hond, J. Xiang, W.C. Chung, E. Cruz-Colón, W. Chen, W.C. Burton, C.J. Kennedy, and W. Ketterle:
Preparation of the spin-Mott state: A spinful Mott insulator of repulsively bound pairs.
Phys. Rev. Lett. 128 , 093401 (2022), https://doi.org/10.1103/PhysRevLett.128.093401

2021

Fermions become “invisible” at low tempearture

Y. Margalit, Y.-K. Lu, F.C. Top, and W. Ketterle:
Pauli blocking of light scattering in degenerate fermions
Science 374 , 976–979 (2021), https://www.science.org/doi/10.1126/science.abi6153pdf
MIT Press ReleaseScience Perspective
EurekAlertScience DailyLive ScienceSciences et Avenir
Chosen by Physics World as one of the top10 Breakthroughs of the Year 2021

N. Jepsen, W.W. Ho, J. Amato-Grill, I .Dimitrova, E. Demler, and W. Ketterle:
Transverse spin dynamics in the anisotropic Heisenberg model realized with ultracold atoms.
Phys. Rev. X 11 , 041054 (2021), https://doi.org/10.1103/PhysRevX.11.041054

W.C. Chung, J. de Hond, J. Xiang, E. Cruz-Colón, and W. Ketterle:
Tunable Single-Ion Anisotropy in Spin-1 Models Realized with Ultracold Atoms.
Phys. Rev. Lett. 126 , 163203 (2021), https://doi.org/10.1103/PhysRevLett.126.163203

F.C. Top, Y. Margalit, and W: Ketterle:
Spin-polarized fermions with p-wave interactions.
Phys. Rev. A 104 , 043311 (2021), https://link.aps.org/doi/10.1103/PhysRevA.104.043311

 

2020

Studying the anisotropic Heisenberg model

P.N. Jepsen, J. Amato-Grill, I .Dimitrova, W.W. Ho, E. Demler, and W. Ketterle:
Spin transport in a tunable Heisenberg model realized with ultracold atoms.
Nature 588 , 403–407 (2020), https://doi.org/10.1038/s41586-020-3033-y
MIT Press ReleaseThe Science Times

First realization of colisional cooling of ultacold molecules

H. Son, J.J. Park, W. Ketterle, and A.O. Jamison:
Collisional Cooling of Ultracold Molecules.
Nature 580 , 197 (2020), https://doi.org/10.1038/s41586-020-2141-z
MIT Press ReleaseNSF Research NewsSciTecDailyHPC Wire

A. Venegas-Gomez, J. Schachenmayer, A.S. Buyskikh, W. Ketterle, M.L. Chiofalo, and A. J. Daley:
Adiabatic preparation of entangled, magnetically ordered states with cold bosons in optical lattices.
Quantum Sci. Technol. 5, 045013 (2020), https://dx.doi.org/10.1088/2058-9565/abb004

A. Venegas-Gomez, A.S Buyskikh, J. Schachenmayer, W. Ketterle, and A.J. Daley:
Dynamics of rotated spin states and magnetic ordering with two-component bosonic atoms in optical lattices.
Phys. Rev. A 102 , 023321 (2020), https://doi.org/10.1103/PhysRevA.102.023321

W. Lunden, L. Du, M. Cantara, P. Barral, A.O. Jamison, and W. Ketterle:
Enhancing the capture velocity of a Dy magneto-optical trap with two-stage slowing.
Phys. Rev. A 101 , 063403 (2020), https://doi.org/10.1103/PhysRevA.101.063403

T. Secker, J. Amato-Grill, W. Ketterle, and S. Kokkelmans:
High-precision analysis of Feshbach resonances in a Mott insulator.
Phys. Rev. A 101 , 04270 (2020), https://doi.org/10.1103/PhysRevA.101.042703

F. Scazza, G. Valtolina, A. Amico,P. E. S. Tavares, M. Inguscio, W. Ketterle,G. Roati,and M. Zaccanti:
Exploring emergent heterogeneous phases in strongly repulsive Fermi gases.
Phys. Rev. A 101 , 013603 (2020), https://doi.org/10.1103/PhysRevA.101.013603

I. Dimitrova, N. Jepsen, A. Buyskikh, A. Venegas-Gomez, J. Amato-Grill, A. Daley, and W. Ketterle:
Enhanced Superexchange in a Tilted Mott Insulator.
Phys. Rev. Lett. 124 , 043204 (2020), https://doi.org/10.1103/PhysRevLett.124.043204

W. Ketterle and A. Jamison:
An atomic physics perspective on the kilogram’s new definition.
Physics Today 73 , 5, 32 (2020); https://doi.org/10.1063/PT.3.4472 pdf

2019

Floquet Heating

J.-R. Li, B. Shteynas, and W. Ketterle:
Floquet Heating in Interacting Atomic Gases with an Oscillating Force.
Phys. Rev. A 100 , 033406 (2019), https://doi.org/10.1103/PhysRevA.100.033406

Interactions of Li-7 in an optical lattice

J. Amato-Grill, N. Jepsen, I. Dimitrova, W. Lunden, and W. Ketterle:
Interaction Spectroscopy of a Two-component Mott Insulator.
Phys. Rev. A 99 , 033612 (2019), Editors’ suggestion, https://doi.org/10.1103/PhysRevA.99.033612
Paper

Recoil dressed RF photon

B. Shteynas, J. Lee, F.C. Top, J.-R. Li, A.O. Jamison, G. Juzeliunas,
and W. Ketterle:

How to dress radio-frequency photons with tunable momentum.
Phys. Rev. Lett. 123, 033203 (2019), https://doi.org/10.1103/PhysRevLett.123.033203

2018

Finding the pathway for STIRAP to the triplet ground state

T.M. Rvachov, H. Son, J.J. Park, S. Ebadi, M.W. Zwierlein, W. Ketterle,
and A.O. Jamison:
Two-Photon Spectroscopy of the $^{23}$Na$^6$Li Triplet Ground State.
Phys. Chem. Chem. Phys. 2018, Advance Article, preprint, arXiv:1712.06776, http://dx.doi.org/10.1039/C7CP08481A
Paper 

NaLi photoassociation

T.M. Rvachov, H. Son, J.J. Park, P.M. Notz, T.T. Wang, M.W. Zwierlein, W. Ketterle, and A.O. Jamison:
Photoassociation of Ultracold $^{23}$Na$^6$Li.
Phys. Chem. Chem. Phys. 2018, Advance Article, p reprint, arXiv:1712.06772, http://dx.doi.org/10.1039/C7CP08480C
Paper

2017

Superradiance with symmetric pump

I. Dimitrova, W. Lunden, J. Amato-Grill, N. Jepsen, Y. Yu, M. Messer,
T. Rigaldo, G. Puentes, D. Weld, and W. Ketterle:
Observation of two-beam collective scattering phenomena in a Bose-Einstein condensate.
Phys. Rev. A 96 , 051603(R) (2017), https://doi.org/10.1103/PhysRevA.96.051603pdf

Ultracold triplet molecules

T.M. Rvachov, H. Son, A.T. Sommer, S. Ebadi, J.J. Park, M.W. Zwierlein,
W. Ketterle, and A.O. Jamison:
Long-Lived Ultracold Molecules with Electric and Magnetic Dipole Moments.
Phys. Rev. Lett. 119, 143001 (2017), https://doi.org/10.1103/PhysRevLett.119.143001pdf
Press: APS Physics Viewpoint pdf

Observation of a supersolid phase

J. Li, J. Lee, W. Huang, S. Burchesky, B. Shteynas, F.C. Top, A.O. Jamison,
and W. Ketterle:

A stripe phase with supersolid properties in spin–orbit-coupled Bose–Einstein condensates.
Nature 543. 91 (2017), doi:10.1038/nature21431 pdf 
preprint arXiv: 1610.08194 (2016), https://arxiv.org/abs/1610.08194 pdf 
Lab picture Group picture Cartoon
press:Physics World Nov Science News Naked Science Science Alert Physics World Feb
Nature News&ViewsMIT Newspdf Gizmodopdf

Surpises in resserach on Bose-Einstein condensation

W. Ketterle:
Twenty years of Atomic Quantum Gases: 1995-2015.
in: “Universal Themes of Bose-Einstein Condensation”, Cambridge University Press, editors: David Snoke, Nick Proukakis, Peter Littlewood (to be published in 2017), ISBN 1107085691, http://www.ebook.de/de/product/28003365/n_p_proukakis_universal_themes_of_bose_einstein_condensation.html
Paper

2016

Spin-Orbit Coupling of Orbital Pseudospins

J. Li, W. Huang, B. Shteynas, S. Burchesky, F.C. Top, E. Su,
J. Lee, A.O. Jamison, and W. Ketterle:

Spin-Orbit Coupling and Spin Textures in Optical Superlattices .
Phys. Rev. Lett. 117 , 185301 (2016), https://doi.org/10.1103/PhysRevLett.117.185301
Paper (pdf) Graphics

Superfluid shielding of an atom interferometer

W.C. Burton, C.J. Kennedy, W.C. Chung, S. Vadia, W. Chen, and W. Ketterle:
Coherence Times of Bose-Einstein Condensates beyond the Shot-Noise Limit via Superfluid Shielding.
Phys. Rev. Lett. 117 , 275301 (2016), https://doi.org/10.1103/PhysRevLett.117.275301
Paper (pdf)Graphics
Press: MIT press release pdfAPS Physics Synopsis pdf

Teaching atomic physics at MIT

I. Chuang and W. Ketterle:
A Transformative Teaching Experience in Atomic Physics at MIT.
Physics@MIT Journal 2016, p. 55, http://web.mit.edu/physics/news/physicsatmit/fall2016.html
Paper

2015

Realization of the Ground State of the
Harper Hofstadter Hamiltonian

C.J. Kennedy, W.C. Burton, W.C. Chung, and W. Ketterle:
Observation of Bose-Einstein Condensation in a Strong Synthetic Magnetic Field.
Nature Physics 11 , 859-864 (2015), http://dx.doi.org/10.1038/nphys3421
Paper Supplemental Material
GraphicsMIT Press Release Nature Physics News & Views (pdf)

Quantum Magnetism with Bosons

J. Schachenmayer, D.M. Weld, H. Miyake, G.A. Siviloglou, A.J. Daley, and W. Ketterle:
Adiabatic cooling of bosons in lattices to magnetic ordering.
Phys. Rev. A 92 , 041602(R) (2015), http://link.aps.org/doi/10.1103/PhysRevA.92.041602
Paper 

How to realize the Weyl Hamiltonian with Cold Atoms

T. Dubcek, C.J. Kennedy, L. Lu, W. Ketterle, M. Soljacic, and H. Buljan:
Weyl points in three-dimensional optical lattices: synthetic magnetic monopoles in momentum space.
Phys. Rev. Lett. 114 , 225301 (2015).
Paper

Commentary on the Quantum Hall Effect

W. Ketterle:
Inside the quantum Hall effect.
Nature Physics 11 , 90 (2015).
Paper

Encyclopedic Definition of Bose-Einstein Condensation

W. Ketterle:
Bose-Einstein condensation.
in: Discoveries in Modern Science: Exploration, Invention, Technology. Ed. James Trefil. Vol. 1. Farmington Hills, MI: Macmillan Reference USA, 2015, pp. 99-102.
Paper

20 years of Bose-Einstein Condensation

W. Ketterle:
Happy birthday BEC.
Nature Physics 11 , 982 (2015), http://dx.doi.org/10.1038/nphys3589
Paper

2014

Gross-Pitaevskii Equation for finite range interactions

H. Veksler, S. Fishman, and W. Ketterle:
A simple model for interactions and corrections to the Gross-Pitaevskii Equation.
Phys. Rev. A 90 , 023620 (2014).
Paper

2013

New approach towards spin-orbit coupling and the spin Hall effect

C.J. Kennedy, G.A. Siviloglou, H. Miyake, W.C. Burton, and W. Ketterle:
Spin-orbit coupling and spin Hall effect for neutral atoms without spin-flips.
Phys. Rev. Lett. 111 , 225301 (2013).
Paper

Lattice for large synthetic magnetic fields

H. Miyake, G.A. Siviloglou, C.J. Kennedy, W.C. Burton, and W. Ketterle:
Realizing the Harper Hamiltonian with Laser-Assisted Tunneling in Optical Lattices.
Phys. Rev. Lett. 111 , 185302 (2013).
Paper Supplemental information Press ( Nature Physics Viewpoint PhysicsWorld)

Non-universal ultracold collisions

T.T. Wang, M.-S. Heo, T.M. Rvachov, D.A. Cotta, and W. Ketterle:
Deviation from Universality in Collisions of Ultracold ^{6}Li _2 Molecules.
Phys. Rev. Lett. 110 , 173203 (2013).
Paper

Paramagnetism in the ideal Fermi gas

Y.R. Lee, T.T. Wang, T.M. Rvachov, J.H. Choi, W.  Ketterle, and M.-S. Heo:
Pauli paramagnetism of an ideal Fermi gas.
Phys. Rev. A 87 , 043629 (2013).
Paper

Computer control system

A. Keshet and W. Ketterle:
A distributed, graphical user interface based, computer control system
for atomic physics experiments.
Rev. Sci. Instrum. 84 , 015105 (2013).
Paper

Conference Proceedings

W. Ketterle:
Ultracold fermions with repulsive interactions.
Proceedings of ICAP 2012, Palaiseau, France, July 23-27, EPJ Web of Conferences, in print (2013).
Preprint

W. Ketterle:
From strongly interacting atomic systems to optical lattices.
Proceedings of the 25th Solvay Conference on Physics, Brussels,
October 19-22, 2011, in print (2013).
Preprint 

2012

NaLi Feshbach molecules

M.-S. Heo, T.T. Wang, C.A. Christensen, T.M. Rvachov, D.A. Cotta, J.H. Choi,
Y.R. Lee, and W. Ketterle:

Formation of Ultracold Fermionic NaLi Feshbach Molecules.
Phys. Rev. A 86 , 021602 (2012).
Paper

Compressibility of a Fermi gas

Y.R. Lee, M.-S. Heo, J.H. Choi, T.T. Wang, C.A. Christensen, T.M. Rvachov,
and W. Ketterle:

Compressibility of an Ultracold Fermi Gas with Repulsive Interactions.
Phys. Rev. A 85 , 063615 (2012).
Paper Press

Absence of ferromagnetism in a repulsive Fermi gas

C. Sanner, E.J. Su, W. Huang, A. Keshet, J. Gillen, and W. Ketterle:
Correlations and Pair Formation in a Repulsively Interacting Fermi Gas.
Phys. Rev. Lett. 108 , 240404 (2012).
Paper 

2011

Bragg scattering of atoms

H. Miyake, G.A. Siviloglou, G. Puentes, D.E. Pritchard, W. Ketterle,
and D.M. Weld:

Bragg Scattering as a Probe of Atomic Wavefunctions and Quantum Phase Transitions in Optical Lattices
Phys. Rev. Lett. 107 , 175302 (2011).
Paper

Adiabatic demagnetization cooling

P. Medley, D.M. Weld, H. Miyake, D.E. Pritchard, and W. Ketterle:
Spin gradient demagnetization cooling of ultracold atoms.
Phys. Rev. Lett. 106 , 195301 (2011).
Paper

Fluctuations in an interacting Fermi gas

C. Sanner, E.J. Su, A. Keshet, W. Huang, J. Gillen, R. Gommers, and W. Ketterle:
Speckle Imaging of Spin Fluctuations in a Strongly Interacting Fermi Gas.
Phys. Rev. Lett. 106 , 010402 (2011).
Paper

Comment on superradiance

W. Ketterle:
Comment on ”Electromagnetic Wave Dynamics in Matter-Wave
Superradiant Scattering”.
Phys. Rev. Lett. 106 , 118901 (2011).
Paper

Conference proceedings

D.M. Weld and W. Ketterle:
Towards quantum magnetism with ultracold atoms.
Proceedings of ICAP 2010, Cairns, Australia, July 25-30, 2010,
Journal of Physics: Conference Series 264, 012017 (2011).

Paper

2010

Spin gradient thermometry and cooling

D.M. Weld, H. Miyake, P. Medley, D.E. Pritchard, and W. Ketterle:
Thermometry and Refrigeration in a Two-Component Mott Insulator
of Ultracold Atoms.
Phys. Rev. A 82 , 051603 (2010).
Paper  

Density fluctuations in an ideal Fermi gas

C. Sanner, E.J. Su, A. Keshet, R. Gommers, Y. Shin, W. Huang, and W. Ketterle:
Suppression of Density Fluctuations in a Quantum Degenerate Fermi Gas
Phys. Rev. Lett. 105 , 040402 (2010).
Paper Supplement Press

Review paper

W. Ketterle, Y. Shin, A. Schirotzek, and C. H. Schunk:
Superfluidity in a gas of strongly interacting fermions.
in: BCS: 50 Years , eds. L.N. Cooper, D. Feldman (World Scientific,
Singapore 2010).

Paper

 

2009

Spin gradient thermometry

D.M. Weld, P. Medley, H. Miyake, D. Hucul, D.E. Pritchard, and W. Ketterle:
Spin gradient thermometry for ultracold atoms in optical lattices.
Phys. Rev. Lett. 103 , 245301 (2009).
PaperPress1Press2

Itinerant Ferromagnetism

G.B. Jo, Y.R. Lee, J.H. Choi, C.A. Christensen, T.H. Kim, J.H. Thywissen,
D.E. Pritchard, and W. Ketterle:

Itinerant ferromagnetism in a Fermi gas of ultracold atoms.
Science 325 , 1521-1524 (2009).
PaperSupplemental Information Background material
MIT press releaseMIT News story Science perspectivePress

Conference Proceedings

Y. Shin, A. Schirotzek, C.H. Schunk, and W. Ketterle:
Mapping the phase diagram of a two-component Fermi gas with strong interactions.
in: Pushing the Frontiers of Atomic Physics , Proceedings of the XXI International Conference on Atomic Physics 2008, eds. R. Côté, P.L. Gould, M.G. Rozman, and W.W. Smith (World Scientific, Singapore , 2009) pp. 230-239.
Paper

W. Ketterle, Y. Shin, A. Schirotzek, and C.H. Schunk.
Superfluidity in a gas of strongly interacting fermions.
J. Phys.: Condens. Matter 21 , 164206(2009).
Paper

2008

Gap spectroscopy

A. Schirotzek, Y. Shin, C.H. Schunck, and W. Ketterle:
Determination of the Superfluid Gap in Atomic Fermi Gases by Quasiparticle Spectroscopy.
Phys. Rev. Lett. 101 , 140403 (2008).
Paper Supplemental Information

Trapping ina hollow-core fiber

C.A. Christensen, S. Will, M. Saba, G.-B. Jo, Y.Shin, W. Ketterle,
and D.E. Pritchard:

Trapping of Ultracold Atoms in a Hollow-core Photonic Crystal Fiber.
Phys. Rev. A 78 , 033429 (2008).
Paper

Bose-Fermi mixture

Y. Shin, A. Schirotzek, C.H. Schunck, and W. Ketterle:
Realization of a strongly interacting Bose-Fermi mixture from
a two-component Fermi gas.
Phys. Rev. Lett. 101 , 070404 (2008).
PaperFig: 3D Phase diagram

The size of superfluid fermion pairs

C.H. Schunck, Y. Shin, A. Schirotzek, and W. Ketterle:
Determination of the fermion pair size in a resonantly interacting superfluid.
Nature 454 , 739-743 (2008).
Paper Supplemental Information

Equation of state of polarized Fermi gas

Y. Shin:
Determination of the equation of state of a polarized Fermi gas at unitarity.
Phys. Rev. A 77, 041603(R) (2008).
Paper

Phase diagram for imbalanced fermionic superfluids

Y. Shin, C.H. Schunck, A. Schirotzek, and W. Ketterle:
Phase diagram of a two-component Fermi gas with resonant interactions.
Nature 451 , 689-693 (2008).
Paper Press Fig: Phase diag. Fig: 3D Phase diagram

Further publications

Comprehensive review paper on fermions
W. Ketterle and M. W. Zwierlein:
Making, probing and understanding ultracold Fermi gases.
in Ultracold Fermi Gases , Proceedings of the International School of Physics “Enrico Fermi”, Course CLXIV, Varenna, 20 – 30 June 2006, edited by M. Inguscio, W. Ketterle, and C. Salomon (IOS Press, Amsterdam) 2008, pp. 95-287; e-print, arXiv: 0801.2500; Rivista del Nuovo Cimento 31 , 247-422 (2008).
Paper

2007

Critical velocity for fermions

D. E. Miller, J. K. Chin and C. A. Stan, Y. Liu, W. Setiawan, C. Sanner
and W. Ketterle:

Critical velocity for superfluid flow across the BEC-BCS crossover.
Phys. Rev. Lett. 99 , 070402 (2007).
Paper Press

Interferometry with phase-fluctuating BECs

G.B. Jo, J.H. Choi, C.A. Christensen, Y.R. Lee, T.A. Pasquini, W. Ketterle,
and D.E. Pritchard:

Matter-Wave Interferometry with Phase Fluctuating Bose-Einstein Condensates.
Phys. Rev. Lett. 99 , 240406 (2007).
Paper

Tomographic RF spectroscopy

Y. Shin, C.H. Schunck, A. Schirotzek, and W. Ketterle:
Tomographic RF Spectroscopy of a Trapped Fermi Gas at Unitarity.
Phys. Rev. Lett. 99 , 090403 (2007).
Paper

Spin exchange collisions

J.G.E. Harris, S.V. Nguyen , S.C. Doret, W. Ketterle, and J.M. Doyle:
Spin-Exchange Collisions of Submerged Shell Atoms Below 1 Kelvin.
Phys. Rev. Lett. 99 , 223201-4 (2007).
Paper

Phase sensitive merging of two BECs

G.-B. Jo, J.-H. Choi , C.A. Christensen, T.A. Pasquini, Y.-R. Lee, W. Ketterle,
and D.E. Pritchard:

Phase Sensitive Recombination of Two Bose-Einstein Condensates on an Atom Chip.
Phys. Rev. Lett. 98 , 180401 (2007).
Paper

Transition from superfluid to dissipative transport in a moving lattice

J. Mun, P. Medley, G.K. Campbell, L.G. Marcassa, D.E. Pritchard,
and W. Ketterle:

Phase diagram for a Bose-Einstein condensate moving in an optical lattice.
Phys. Rev. Lett. 99 , 150604 (2007).
Paper

Pairing without superfluidity

C. H. Schunck, Y. Shin, A. Schirotzek, M. W. Zwierlein,and W. Ketterle:
Pairing Without Superfluidity: The Ground State of an Imbalanced Fermi Mixture.
Science 316 , 867-870 (2007).
Paper Supplemental InformationErratumPress

Thin magnetic film trapping

M. Boyd, E.W. Streed, P. Medley, G.K. Campbell, J. Mun, W, Ketterle,
and D.E. Pritchard:

Atom trapping with a thin magnetic film.
Physical Review A (Atomic, Molecular, and Optical Physics) 76 , 043624-5 (2007).
Paper

Number squeezed atom interferometer

G.-B. Jo, Y. Shin, S. Will, T. A. Pasquini, M. Saba, W. Ketterle , D. E. Pritchard,
M. Vengalattore, and M. Prentiss,:

Long Phase Coherence Time and Number Squeezing of two Bose-Einstein Condensates on an Atom Chip.
Phys. Rev. Lett. 98 , 030407 (2007).
Paper

Expansion of superfluid fermions

C.H. Schunck, M.W. Zwierlein, A. Schirotzek, and W. Ketterle:
Superfluid Expansion of a Rotating Fermi Gas.
Phys. Rev. Lett. 98 , 050404 (2007).
Paper

Further publications

Popular update on Fermi gases
W. Ketterle and Y. Shin:
Fermi gases go with the superfluid flow
Physics World, June 2007, pp. 39-43.
Paper

2006

Superfluidity of Polarized Fermi Gases

M.W. Zwierlein and W. Ketterle :
Comment on “Pairing and Phase Separation in a Polarized Fermi Gas”
Science, 314 , 54a (2006).
Paper

Imaging Mott insulator Shells

G.K. Campbell, J. Mun, M. Boyd, P. Medley, A.E. Leanhardt, L. Marcassa,
D.E. Pritchard, W. Ketterle:

Imaging the Mott Insulator Shells By Using Atomic Clock Shifts.
Science 313 , 649-652 (2006).
Paper Press

Fermionic superfluidity in a lattice

J.K. Chin, D.E. Miller, Y. Liu, C. Stan, W. Setiawan, C. Sanner, K. Xu, W. Ketterle:
Evidence for Superfluidity of Ultracold Fermions in an Optical Lattice.
Nature 443 , 961-964 (2006).
Paper Press

Phase separation in imbalanced Fermi gases

Y. Shin, M. W. Zwierlein, C. H. Schunck, A. Schirotzek, and W. Ketterle:
Observation of Phase Separation in a Strongly-Interacting Imbalanced Fermi Gas.
Phys. Rev. Lett. 97 , 030401 (2006).
Paper Press

Quantum Zeno Effect in a BEC

E.W. Streed, J. Mun, M. Boyd, G.K. Campbell, P. Medley, W. Ketterle,
D.E. Pritchard:

Continuous and Pulsed Quantum Zeno Effect.
Phys. Rev. Lett. 97 , 260402 (2006).
Paper

Interaction effects in quantum reflection of BECs

T. A. Pasquini, M. Saba, G. Jo, Y. Shin, W. Ketterle, D. E. Pritchard,
T. A. Savas, N. Mulders:

Low velocity quantum reflection of Bose-Einstein condensates.
Phys. Rev. Lett. 97 , 260402 (2006).
Paper

Direct observation of the phase transition for fermions

M.W. Zwierlein, C.H. Schunck, A. Schirotzek, W. Ketterle:
Direct Observation of the Superfluid Phase Transition in Ultracold Fermi Gases.
Nature 442, 54-58 (2006).
Paper Supplemental Material

Strong quantum depletion

K. Xu, Y. Liu, D.E. Miller, J.K. Chin, W. Setiawan, and W. Ketterle:
Observation of Strong Quantum Depletion in a Gaseous Bose-Einstein Condensate.
Phys. Rev. Lett. 96, 180405 (2006).
Paper

Superfluidity with Imbalanced Spin Populations

MW. Zwierlein, A. Schirotzek, C.H. Schunck, and W, Ketterle:
Fermionic Superfluidity with Imbalanced Spin Populations.
Science 311, 492-496 (2006); published online on Dec. 22, 2005.
Paper Supplemental Material Science link

Parametric amplification

G.K. Campbell, J. Mun, M. Boyd, E.W. Streed, W. Ketterle, and D.E. Pritchard:
Parametric Amplification of Atoms.
Phys. Rev. Lett. 96, 020406 (2006).
Paper

Experimental setup for BEC Experiment

E.W Streed, A.P Chikkatur, T.L Gustavson, M. Boyd, Y. Torii, D. Schneble, G.K. Campbell, D.E. Pritchard, and W. Ketterle:
Large atom number Bose-Einstein Condensate machines.
Rev. Sci. IInstrum. 77, 023106 (2006).
Paper

Further publications

Talk on quantum statistics and BEC
Wolfgang Ketterle:
Bose-Einstein Condensation: Identity Crisis for Indistinguishable Particles.
in “Quantum Mechanics at the Crossroads”, eds. James Evans and Alan S. Thorndike, Springer, Berlin , 2006), pp. 159-183.
Paper (20 MB)

2005

Optical lattice with sodium

K. Xu, Y. Liu, J.R. Abo-Shaeer, T. Mukaiyama, J.K. Chin, D.E. Miller, W. Ketterle, K.M. Jones, and E. Tiesinga:
Sodium Bose-Einstein Condensates in an Optical Lattice.
Phys. Rev. A 72 , 043604 (2005).
Paper (pdf, 270 kB)

Optical weak link

Y. Shin , G.-B. Jo , M. Saba , T.A. Pasquini , W. Ketterle , and D.E. Pritchard :
Optical Weak Link between Two Spatially Separate Bose-Einstein Condensates.
Phys. Rev. Lett. 95 , 170402 (2005).
Paper
(pdf, 540 kB)

Atom chip interferometry

Y. Shin, C. Sanner, G.-B. Jo, T. A. Pasquini, M. Saba, W. Ketterle, D. E. Pritchard, M. Vengalattore and M. Prentiss:
Interference of Bose-Einstein Condensates on an Atom Chip.
Phys. Rev. A 72 , 021604(R) (2005).
Paper (pdf, 340 kB)

Observation of High-T_c Superfluidity

M.W. Zwierlein, J.R. Abo-Shaeer, A. Schirotzek, C.H. Schunck, and W. Ketterle:
Vortices and Superfluidity in a Strongly Interacting Fermi Gas.
Nature 435 , 1047-1051 (2005).
Paper (pdf, 290 kB) more information

Lithium-sodium oven

C. A. Stan and W. Ketterle:
Multiple species atom source for laser-cooling experiments.
Rev. Sci. Instrum. 76, 063113 (2005).
Paper (pdf, 96 kB)

Modification of photon recoil by the index of refraction

G.K. Campbell, A.E. Leanhardt, J. Mun, M. Boyd, E.W. Streed, W. Ketterle, and D.E. Pritchard:
Photon Recoil Momentum in Dispersive Media.
Phys. Rev. Lett. 94, 170403 (2005).
Paper (pdf, 166 kB)Press ’05Press ’06 Press ’07 Press ’08

Interference of thermal atoms

D.E. Miller, J.R. Anglin, J.R. Abo-Shaeer, K. Xu, J.K. Chin and W. Ketterle:
High-Contrast Interference in a Thermal Cloud of Atoms .
Phys Rev. A 71, 043615 (2005).
Paper (pdf, 343 kB)

Formation Dynamics of a Fermion Pair Condensate

M.W. Zwierlein, C.H. Schunck, C.A. Stan, S.M.F. Raupach, and W. Ketterle:
Formation Dynamics of a Fermion Pair Condensate.
Phys. Rev. Lett. 94, 180401 (2005).
Paper (pdf, 199 kB)

Optical measurement of the phase of
Bose-Einstein condensates

M. Saba, T.A. Pasquini, C. Sanner, Y. Shin, W. Ketterle, and D.E. Pritchard:
Continuous measurement of the relative phase of two Bose-Einstein condensates using light scattering.
Science 307, 1945-1948 (2005).
Paper (pdf, 172 kB) Press

Coherent molecule optics

J.R. Abo-Shaeer, D.E. Miller, J.K. Chin, K. Xu, T. Mukaiyama, and W. Ketterle:
Coherent Molecular Optics using Sodium Dimers.
Phys. Rev. Lett. 94, 040405 (2005).
Paper (pdf, 125 kB)

Lithium Feshbach Resonances

C.H. Schunck, M.W. Zwierlein, C.A. Stan, S.M.F. Raupach, W. Ketterle, A. Simoni, E. Tiesinga, C.J. Williams, and P.S. Julienne:
Feshbach Resonances in Fermionic ^6Li.
Phys. Rev. A 71, 045601 (2005).
Paper (pdf, 41 kB)

2004

Doubly quantized vortices

Y. Shin, M. Saba, M. Vengalattore, T. A. Pasquini, C. Sanner, A. E. Leanhardt, M. Prentiss, D. E. Pritchard, and W. Ketterle:
Dynamical Instability of a Doubly Quantized Vortex in a Bose-Einstein condensate.
Phys. Rev. Lett. 93 , 160406 (2004). Paper (pdf, 183 kB

Interspecies Feshbach Resonances

C.A. Stan, M.W. Zwierlein, C.H. Schunck, S.M.F. Raupach, and W. Ketterle:
Observation of Feshbach resonances between two different atomic species.
Phys. Rev. Lett. 93 , 143001 (2004).
Paper (pdf, 147 kB)

Quantum reflection

T.A. Pasquini, Y. Shin, C. Sanner, M. Saba, A. Schirotzek, D.E. Pritchard, and W. Ketterle:
Quantum reflection of atoms from a solid surface at normal incidence.
Phys. Rev. Lett. 93 , 223201 (2004).
Paper (pdf, 249 kB)

Condensation of Fermionic Atom Pairs
Near a Feshbach Resonance

M.W. Zwierlein, C.A. Stan, C.H. Schunck, S.M.F. Raupach, A.J. Kerman, and W. Ketterle.
Condensation of Pairs of Fermionic Atoms Near a Feshbach Resonance.
Phys. Rev. Lett. 92, 120403 (2004).
Paper (pdf, 483 kB) Figure_2  ISI Fast breaking comment

Dissociation of Ultracold Sodium Molecules

T. Mukaiyama, J. R. Abo-Shaeer, K. Xu, J. K. Chin, and W. Ketterle:
Dissociation and Decay of Ultracold Sodium Molecules.
Phys. Rev. Lett. 92, 180402 (2004).
Summary (pdf) Paper (pdf, 277 kB)

BEC Distillation in a Double-Well Potential

Y. Shin, M. Saba, A. Schirotzek, T. A. Pasquini, A. E. Leanhardt, D. E. Pritchard, and W. Ketterle:
Distillation of Bose-Einstein condensates in a double-well potential.
Phys. Rev. Lett. 92, 150401 (2004).
Summary (pdf)Paper (pdf, 148 kB)

 

BEC Distillation in a Double-Well Potential

Y. Shin, M. Saba, A. Schirotzek, T. A. Pasquini, A. E. Leanhardt, D. E. Pritchard, and W. Ketterle:
Distillation of Bose-Einstein condensates in a double-well potential.
Phys. Rev. Lett. 92, 150401 (2004).
Summary (pdf) Paper (pdf, 148 kB)

Raman Superradiance

D. Schneble, G.K. Campbell, E.W. Streed, M. Boyd, D.E. Pritchard, and W. Ketterle:
Raman Amplification of Matter Waves.
Phys. Rev. A 69, 041601(R) (2004).
Summary (pdf) Paper (pdf, 402 kB)

Zero-temperature collisions of fermions

S. Gupta, Z. Hadzibabic, J.R. Anglin, and W. Ketterle:
Collisions in zero temperature Fermi gases.
Phys. Rev. Lett. 92, 100401 (2004).
Summary (pdf)Paper (pdf, 102 kB)

Interferometry in a double-well potential

Y. Shin, M. Saba, T. Pasquini, W. Ketterle, D.E. Pritchard, and A.E. Leanhardt:
Atom interferometry with Bose-Einstein condensates in a double-well potential.
Phys. Rev. Lett. 92, 050405 (2004).
Summary (pdf) Paper (pdf, 282 kB)

Further publications

About ultralow temperatures
W. Ketterle:
How are temperatures close to absolute zero achieved and measured?
Scientific American.com, Ask the Experts, January 19, 2004.
Scientific American, May 2004, p. 120.
Paper

2003

Bose-Einstein condensation of molecules

M.W. Zwierlein, C.A. Stan, C.H. Schunck, S.M.F. Raupach, S. Gupta, Z. Hadzibabic, and W. Ketterle:
Observation of Bose-Einstein Condensation of Molecules.
Phys. Rev. Lett. 91, 250401 (2003).
Summary (pdf)Paper (pdf, 120 kB) MIT Press Release

Quantum-degenerate molecules

K. Xu, T. Mukaiyama, J.R. Abo-Shaeer, J.K. Chin, D. Miller, and W. Ketterle:
Formation of Quantum-Degenerate Sodium Molecules.
Phys. Rev. Lett. 91, 210402 (2003). Summary (pdf)Paper (pdf, 430 kB)

Sub-nanokelvin temperatures

A. E. Leanhardt, T. A. Pasquini, M. Saba, A. Schirotzek, Y. Shin, D. Kielpinski,
D. E. Pritchard, and W. Ketterle:

Adiabatic and Evaporative Cooling of Bose-Einstein condensates
below 500 Picokelvin.

Science 301, 1513-1515 (2003).
Summary (pdf)Paper (pdf, 231 kB) MIT Press ReleasePhotos
How to achieve and measure ultralow temperatures
Press Report 1Press Report 2Guiness Book (pdf, 509 kB)

Absence of clock shifts in fermionic gases

M.W. Zwierlein, Z. Hadzibabic, S. Gupta, and W. Ketterle:
Spectroscopic insensitivity to cold collisions in a two-state mixture of fermions.
Phys. Rev. Lett. 91, 250404 (2003).
Summary (pdf) Paper (pdf, 153 kB)

Large clouds of fermions

Z. Hadzibabic, S. Gupta, C.A. Stan, C.H. Schunck, M.W. Zwierlein, K. Dieckmann, and W. Ketterle
Fifty-fold improvement in the number of quantum degenerate fermionic atoms.
Phys. Rev. Lett. 91, 160401 (2003).
Summary (pdf) Paper (pdf, 131 kB)

RF spectroscopy of fermions

S. Gupta, Z. Hadzibabic, M.W. Zwierlein, C.A. Stan, K. Dieckmann, C.H. Schunck, E.G.M. van Kempen, B.J. Verhaar, and W. Ketterle:
RF Spectroscopy of Ultracold Fermions.
Science 300, 1723-1726 (2003); published online in Science Express
on May 8, 2003.

Summary (pdf)Paper (pdf, 194kB) Press report 1 (pdf, 92 kB)
Press report 2 (pdf, 84 kB)
Press report 3Press report 4

Superradiance in the short-pulse regime

Dominik Schneble, Yoshio Torii, Micah Boyd, Erik W. Streed,
David E. Pritchard, and Wolfgang Ketterle:

The Onset of Matter-Wave Amplification in a Superradiant
Bose-Einstein Condensate.

Science 300, 475-478 (2003); published online in Science Express
on March 27, 2003.

Summary (pdf)Paper (pdf, 153 kB) Press report (jpg, 109 kB)

Instability of a BEC with negative scattering length

J.K. Chin, J.M. Vogels, and W. Ketterle:
Amplification of Local Instabilities in a Bose-Einstein Condensate
with Attractive Interactions.
Phys. Rev. Lett. 90, 160405 (2003).
Summary (pdf) Paper (pdf, 193 kB)

Coreless vortex

A.E. Leanhardt, Y. Shin, D. Kielpinski, D.E. Pritchard, and W. Ketterle:
Coreless vortex formation in a spinor Bose-Einstein condensate.
Phys. Rev. Lett. 90, 140403 (2003).
Summary (pdf) Paper (pdf, 445kB)

BEC near surface

A.E. Leanhardt, Y. Shin, A.P. Chikkatur, D. Kielpinski,
W. Ketterle, and D.E. Pritchard:

Bose-Einstein condensates near a microfabricated surface.
Phys. Rev. Lett. 90, 100404 (2003).
Summary (pdf) Paper (pdf, 210 kB)

Coherent collisions

J. M. Vogels, J. K. Chin, and W. Ketterle:
Coherent Collisions between Bose-Einstein Condensates.
Phys. Rev. Lett. 90, 030403 (2003).
Summary (pdf) Paper (pdf, 141 kB)

F=2 Na BEC

A. Görlitz, T.L. Gustavson, A.E. Leanhardt, R. Löw, A.P. Chikkatur,
S. Gupta, S. Inouye, D.E. Pritchard, and W. Ketterle:

Sodium Bose-Einstein Condensates in the F=2 State
in a Large-volume Optical Trap.
Phys. Rev. Lett. 90, 090401 (2003).
Summary (pdf) Paper (pdf, 330 kB)

2002

Fermionic Feshbach resonance

K. Dieckmann, C. A. Stan, S. Gupta, Z. Hadzibabic, C. Schunck, and W. Ketterle:
Decay of ultracold fermionic lithium gas near a Feshbach resonance.
Phys. Rev. Lett. 89,
203201 (2002).
Abstract Summary (pdf) Paper (pdf, 86 kB)

Topological phases and vortices

A.E. Leanhardt, A. Görlitz, A.P. Chikkatur, D. Kielpinski, Y. Shin, D.E. Pritchard, and W. Ketterle:
Imprinting vortices in a Bose-Einstein condensate using topological phases.
Phys. Rev. Lett. 89,
190403 (2002).
Abstract Summary (pdf) Paper (pdf, 478kB)

Continuous BEC

A. P. Chikkatur, Y. Shin, A. E. Leanhardt, D. Kielpinski, E. Tsikata, T. L. Gustavson, D. E. Pritchard, and W. Ketterle:
A Continuous Source of Bose-Einstein Condensed Atoms.
Science 296, 2193-2195 (2002); published online in Science Express
on May 16, 2002
AbstractSummary (pdf) Paper (pdf, 199 kB) Press report (pdf, 83 kB)

Pair-correlated atomic beams

J.M. Vogels, K. Xu, and W. Ketterle:
Generation of macroscopic pair-correlated atomic beams by four-wave
mixing in Bose-Einstein condensates.

Phys. Rev. Lett. 89, 020401 (2002).
AbstractSummary (pdf)Paper (pdf, 150 kB)

Contrast interferometry

S. Gupta, K. Dieckmann, Z. Hadzibabic and D. E. Pritchard:
Contrast Interferometry using Bose-Einstein Condensates to Measure
h/m and \alpha.

Phys. Rev. Lett. 89, 140401 (2002).
Abstract Summary (pdf) Paper (pdf, 177 kB) Press report (pdf, 147 kB)

Propagation of a BEC on a microchip

A.E. Leanhardt, A.P. Chikkatur, D. Kielpinski, Y. Shin, T.L. Gustavson, W. Ketterle, and D.E. Pritchard:
Propagation of Bose-Einstein condensates in a magnetic waveguide.
Phys. Rev. Lett. 89, 040401 (2002).
AbstractSummary (pdf)Paper (pdf, 263 kB)

Quantum degenerate fermion-boson mixture

Z. Hadzibabic, C.A. Stan, K. Dieckmann, S. Gupta, M.W. Zwierlein, A. Görlitz, and W. Ketterle:
Two species mixture of quantum degenerate Bose and Fermi gases.
Phys. Rev. Lett. 88, 160401(2002).
AbstractSummary (pdf)Paper (pdf, 112 kB)Press report (pdf, 224 kB)

Analysis of the phonon wavefunction

J.M. Vogels, K. Xu, C. Raman, J.R. Abo-Shaeer, and W. Ketterle:
Experimental observation of the Bogoliubov transformation
for a Bose-Einstein condensed gas.

Phys. Rev. Lett. 88, 060402 (2002).
AbstractSummary (pdf)Paper (pdf, 102 kB)

Formation and decay of vortex lattices

J.R. Abo-Shaeer, C. Raman, and W. Ketterle:
Formation and Decay of Vortex Lattices in Bose-Einstein
Condensates at Finite Temperatures.

Phys. Rev. Lett. 88, 070409 (2002).
AbstractSummary (pdf)Paper (pdf, 231kB)

BEC Tweezers

T.L.Gustavson, A.P.Chikkatur, A.E.Leanhardt, A.Görlitz, S.Gupta, D.E.Pritchard, and W.Ketterle: Transport of Bose-Einstein Condensates with Optical Tweezers.
Phys. Rev. Lett. 88, 020401 (2002).
AbstractSummary (pdf)Paper (pdf, 185 kB) Images Press report_1 (jpg, 1.0 MB)
Press report_2 (jpg, 0.5 MB)

Further publications

Nature Insight Review
J.R. Anglin and W. Ketterle:
Bose-Einstein condensation of atomic gases.
Nature 416, 211-218 (2002).
Paper (pdf, 1.6 MB)

Nobel Lecture
W. Ketterle:
When atoms behave as waves:  Bose-Einstein condensation and the atom laser.
in: Les Prix Nobel 2001 (The Nobel Foundation, Stockholm, 2002),
pp. 118154.Paper (pdf, 1.0 MB)
reprinted in: ChemPhysChem 3, 736-753 (2002).Paper (pdf, 577 kB)
Rev. Mod. Phys. 74, 1131-1151 (2002).Paper (pdf, 1.55 MB)ISI Interview

Nobel autobiograhyPaper (pdf, 1.3 MB)

Some autobiographical notes
W. Ketterle:
Im Zickzack-Kurs zum Nobelpreis (in German).
Jahresbericht 2001, Studienstiftung des deutschen Volkes.Paper (pdf, 571 kB)

2001

Vortex nucleation

C. Raman, J.R. Abo-Shaeer, J.M. Vogels, K. Xu, and W. Ketterle:
Vortex Nucleation in a Stirred Bose-Einstein Condensate.
Phys. Rev. Lett. 87, 210402 (2001).
Abstract Summary (pdf) Paper (pdf, 533kB)

BEC in lower dimensions

A. Görlitz, J.M. Vogels, A.E. Leanhardt, C. Raman, T.L. Gustavson, J.R. Abo-Shaeer, A.P. Chikkatur, S. G upta, S. Inouye, T.P. Rosenband, and W. Ketterle:
Realization of Bose-Einstein condensates in lower dimensions.
Phys. Rev. Lett. 87, 130402 (2001).
Abstract Summary (pdf) Paper (pdf, 131 kB)Press report (pdf,67 kB)

Vortex interference

S. Inouye, S. Gupta, T. Rosenband, A.P. Chikkatur, A. Görlitz, T.L. Gustavson, A.E. Leanhardt, D.E. Pritchard, and W. Ketterle:
Observation of vortex phase singularities in Bose-Einstein condensates.
Phys. Rev. Lett. 87, 080402 (2001).
Abstract Summary (pdf)Paper (pdf, 184 kB)Images

Vortex lattices

J.R. Abo-Shaeer, C. Raman, J.M. Vogels, and W. Ketterle:
Observation of Vortex Lattices in Bose-Einstein Condensates.
Science 292, 476-479 (2001).
Abstract Summary (pdf) Paper (pdf, 316 kB)Images

Dissipation in stirred clouds

C. Raman, R. Onofrio, J.M. Vogels, J.R. Abo-Shaeer, and W. Ketterle:
Dissipationless flow and superfluidity in gaseous Bose-Einstein condensates.
J. Low Temp. Phys. 122, 99-116 (2001).
Abstract Summary (pdf) Paper (pdf, 288 kB)

Matter wave amplification for fermions

W. Ketterle and S. Inouye:
Does matter wave amplification work for fermions?
Phys. Rev. Lett. 86, 4203-4206 (2001).
Abstract Summary (pdf Paper (pdf, 82 kB)Press report (pdf,262 kB)

Enhanced spontaneous emission in a BEC

A. Görlitz, A.P. Chikkatur, and W. Ketterle:
Enhancement and suppression of spontaneous emission and light scattering by quantum degeneracy.
Phys. Rev. A 36, 041601(R), 2001.
Abstract Summary (pdf)Paper (pdf, 55 kB)

Further publications

Les Houches lecture notes
D.M. Stamper-Kurn and W. Ketterle:
Spinor Condensates and Light Scattering from Bose-Einstein Condensates.
in: Coherent Atomic Matter Waves, Les Houches Summer School Session LXXII in 1999, edited by R. Kaiser, C. Westbrook, and F. David (Springer, NewYork, 2001), pp. 137-217; e-print cond-mat/0005001.
Abstract
Preprint (pdf, 876 kB)

Matter and light wave amplification (popular article, in German)
A. Görlitz and T. Pfau:
Ein Verstärker für Materie- und Lichtwellen.
Phys. Blätt. 57, 55 (2001).
AbstractPaper (pdf, 614 kB)

Popular summary on atom amplification and vortex generation in Bose-Einstein condensates
W. Ketterle
The Magic of Matter Waves
physics@MIT, Departmental Newsletter 2001
Paper (pdf, 285 kB)

Cargese lecture notes
W. Ketterle and S. Inouye:
Collective enhancement and suppression in Bose-Einstein condensates.
Compte rendus de l’académie des sciences, Série IV – Physique Astrophysique, vol. 2, pp. 339-380 (2001); e-print cond- mat/0101424
.
AbstractPaper (pdf, 1.0 MB)

2000

Light and atom amplification

S. Inouye, R.F.Löw, S. Gupta, T. Pfau, A. Görlitz, T. L. Gustavson, D. E. Pritchard and W. Ketterle:
Amplification of Light and Atoms in a Bose-Einstein Condensate.
Phys. Rev. Lett. 85, 4225-4228 (2000).
AbstractSummary (pdf)Paper (pdf, 108 kB)

Superfluid flow

R. Onofrio, C. Raman, J. M. Vogels, J. Abo-Shaeer, A.P. Chikkatur,
and W. Ketterle:

Observation of Superfluid Flow in a Bose-Einstein Condensed Gas.
Phys. Rev. Lett. 85, 2228-2231 (2000).
AbstractSummary (pdf)Paper (pdf, 380 kB)

Impurity scattering

A.P. Chikkatur, A. Görlitz, D.M. Stamper-Kurn, S. Inouye, S. Gupta,
and W. Ketterle:

Suppression and enhancement of impurity scattering
in a Bose-Einstein condensate.

Phys. Rev. Lett. 85, 483-486 (2000).
AbstractSummary (pdf) Paper (pdf, 292 kB)

Surface excitations in a BEC

R. Onofrio, D.S. Durfee, C. Raman, M. Köhl, C.E. Kuklewicz,
and W. Ketterle:

Surface excitations of a Bose-Einstein condensate.
Phys. Rev. Lett. 84, 810-813 (2000).
AbstractSummary (pdf) Paper (pdf, 441 kB)

Further publications

LT 22 Proceedings
W. Ketterle:
Bose-Einstein condensation in dilute atomic gases: atomic physics meets condensed matter physics.
Proceedings of the 22nd International Conference on Low Temperature Physics (LT 22). Physica B 280, 11-19 (2000).
AbstractPreprint (pdf, 829 kB)

1999

Matter wave amplification

S. Inouye, T. Pfau, S. Gupta, A.P. Chikkatur, A. Görlitz, D.E. Pritchard,
and W. Ketterle:

Observation of phase-coherent amplification of atomic matter waves.
Nature 402, 641-644 (1999).
Summary (pdf) Preprint (pdf, 131 kB) ImagePress report (pdf,123 kB)

Critical velocity

C. Raman, M. Köhl, R. Onofrio, D.S. Durfee, C.E. Kuklewicz,
Z. Hadzibabic, and W. Ketterle:

Evidence for a critical velocity in a Bose-Einstein condensed gas.
Phys. Rev. Lett. 83, 2502-2505 (1999).
Summary (pdf) Paper (pdf, 247 kB)

Phonon excitation

.D.M. Stamper-Kurn, A.P. Chikkatur, A. Görlitz, S. Inouye, S. Gupta,
D.E. Pritchard, and W. Ketterle:

Excitation of phonons in a Bose-Einstein condensate by light scattering.
Phys. Rev. Lett. 83, 2876-2879 (1999).
Summary (pdf) Paper (pdf, 250 kB)

Superradiant Rayleigh scattering

S. Inouye, A.P. Chikkatur, D.M. Stamper-Kurn, J. Stenger, D.E. Pritchard,
and W. Ketterle:

Superradiant Rayleigh scattering from a Bose-Einstein condensate.
Science 285, 571-574 (1999).
Summary (pdf) Paper (pdf, 175 kB) Images

Spinor tunneling

D.M. Stamper-Kurn, H.-J. Miesner, A.P. Chikkatur,
S. Inouye, J. Stenger, and W. Ketterle:

Quantum tunneling across spin domains in a Bose-Einstein condensate.
Phys. Rev. Lett. 83, 661-665 (1999).
Summary (pdf) Paper (pdf, 69 kB)

Bragg spectroscopy

J. Stenger, S. Inouye, A.P. Chikkatur, D.M. Stamper-Kurn,
D.E. Pritchard, and W. Ketterle:
Bragg spectroscopy of a Bose-Einstein condensate.
Phys. Rev. Lett. 82, 4569-4573 (1999).
Summary (pdf)Paper (pdf, 124 kB) Erratum (pdf, 21 kB) Animation (23 kB)

Metastable spinor BEC

H.-J. Miesner, D.M. Stamper-Kurn, J. Stenger, S. Inouye,
A.P. Chikkatur, and W. Ketterle:

Observation of metastable states in spinor Bose-Einstein condensates.
Phys. Rev. Lett. 82, 2228-2231 (1999).
Summary (pdf) Paper (pdf, 189 kB)

Feshbach losses

J. Stenger, S. Inouye, M.R. Andrews, H.-J. Miesner,
D.M. Stamper-Kurn, and W. Ketterle:

Strongly enhanced inelastic collisions in a Bose-Einstein
condensate near Feshbach resonances.

Phys. Rev. Lett. 82, 2422-2425 (1999).
Summary (pdf) Paper (pdf, 134 kB)

Further publications

Bragg and Rayleigh scattering review
J. Stenger, S. Inouye, D.M. Stamper-Kurn, A.P. Chikkatur,
D.E. Pritchard, and W. Ketterle:

Bragg spectroscopy and superradiant Rayleigh scattering
in a Bose-Einstein condens
ate.
Appl. Phys. B 69, 347-352 (1999)
Paper (pdf, 188 kB)

Varenna lecture notes
W. Ketterle, D.S. Durfee, and D.M. Stamper-Kurn:
Making, probing and understanding Bose-Einstein condensates.
In Bose-Einstein condensation in atomic gases, Proceedings of the International School of Physics “Enrico Fermi”, Course CXL, edited by M. Inguscio, S. Stringari and C.E. Wieman (IOS Press, Amsterdam, 1999)
pp. 67-176.
Preprint (pdf, 1.07 MB) Fig. 10 Fig. 28

1998

Spinor condensates

J. Stenger, S. Inouye, D.M. Stamper-Kurn, H.-J. Miesner,
A.P. Chikkatur, and W. Ketterle:
Spin domains in ground state spinor Bose-Einstein condensates.
Nature 396, 345-348 (1998).
Summary (pdf) Paper (pdf, 271 kB)

Reversible BEC

D.M. Stamper-Kurn, H.-J. Miesner, A.P. Chikkatur,
S. Inouye, J. Stenger, and W. Ketterle:

Reversible formation of a Bose-Einstein condensate.
Phys. Rev. Lett. 81, 2194-2197 (1998).
Summary (pdf) Paper (pdf, 153 kB) Animation (2.73 MB)

Feshbach resonances

S. Inouye, M.R. Andrews, J. Stenger, H.-J. Miesner,
D.M. Stamper-Kurn, and W. Ketterle:

Observation of Feshbach resonances in a Bose-Einstein condensate.
Nature 392, 151-154 (1998).
Summary (pdf) Paper (pdf, 300 kB)

Finite temperature collective excitations

D.M. Stamper-Kurn, H.-J. Miesner, S. Inouye, M.R. Andrews, and W. Ketterle:
Collisionless and hydrodynamic excitations of a Bose-Einstein condensate.
Phys. Rev. Lett. 81, 500-503 (1998).
Summary (pdf) Paper (pdf, 476kB) Animation (570 kB) Further images and text

BEC formation

H.-J. Miesner, D.M. Stamper-Kurn, M.R. Andrews, D.S. Durfee,
S. Inouye, and W. Ketterle:

Bosonic stimulation in the formation of a Bose-Einstein condensate.
Science 279, 1005-1007 (1998).
Summary (pdf) Paper (pdf, 314 kB) Figure

Optical trap for a condensate

D.M. Stamper-Kurn, M.R. Andrews, A.P. Chikkatur, S. Inouye,
H.-J. Miesner, J. Stenger, and W. Ketterle:

Optical confinement of a Bose-Einstein condensate.
Phys. Rev. Lett. 80, 2027-2030 (1998).
Summary (pdf) Paper (pdf, 713 kB)

Semi-ideal model

M. Naraschewski and D.M. Stamper-Kurn:
Analytical description of a trapped semi-ideal
Bose gas at finite temperature.

Phys. Rev. A 58, 2423 (1998).
Summary (pdf)Paper (pdf, 103 kB)

Further publications

Short review of the state of the field
H.-J. Miesner and W. Ketterle:
Bose-Einstein condensation in dilute atomic gases.
Proceedings of the Symposium on “The Advancing Frontiers of Condensed Matter Science”, Philadelphia, Oct. 13-14, 1997. Solid State Comm.
107, 629-637 (1998).

Preprint (pdf, 237 kB)

Illustrated introduction and early experiments
D.S. Durfee and W. Ketterle:
Experimental studies of Bose-Einstein condensation.
Optics Express 2, 299-313 (1998).
Paper (pdf, 1023 kB)

 

1997

Coherence properties

W. Ketterle and H.-J. Miesner: Coherence properties
of Bose-Einstein condensates and atom lasers.
Phys. Rev. A 56, 3291-3293 (1997).
Summary (pdf) Paper (pdf, 57 kB)

Sound propagation

M.R. Andrews, D.M. Kurn, H.-J. Miesner, D.S. Durfee,
C.G. Townsend, S. Inouye,
and W. Ketterle:
Propagation of sound in a Bose-Einstein condensate.
Phys. Rev. Lett. 79, 549-552 (1997);  Erratum: Phys. Rev. Lett. 80, 2967 (1998).
Summary (pdf) Paper (pdf, 152 kB Erratum (pdf, 62 kB) Images

Two-step BEC

N.J. van Druten and W. Ketterle:
Two-step condensation of the ideal Bose gas in highly anisotropic traps.
Phys. Rev. Lett. 79, 553-556 (1997).
Summary (pdf) Paper (pdf, 131 kB)

BEC interference

M.R. Andrews, C.G. Townsend, H.-J. Miesner, D.S. Durfee,
D.M. Kurn, and W. Ketterle:

Observation of interference between two Bose condensates.
Science 275, 637-641 (1997).
Summary (pdf) Paper (pdf, 582 kB)
Animation (361 kB) Images The atom laser @ MIT

Output coupler

M.-O. Mewes, M.R. Andrews, D.M. Kurn, D.S. Durfee,
C.G. Townsend, and W. Ketterle:

Output coupler for Bose-Einstein condensed atoms.
Phys. Rev. Lett. 78, 582-585 (1997).
Summary (pdf) Paper (pdf, 119 kB)
Animation 1 (514 kB) Animation 2 (1.72 MB) The atom laser @ MIT

1996

Collective excitations

M.-O. Mewes, M.R. Andrews, N.J. van Druten, D.M. Kurn, D.S. Durfee, C.G. Townsend, and W. Ketterle:
Collective excitations of a Bose-Einstein condensate in a magnetic trap.
Phys. Rev. Lett. 77, 988-991 (1996).
Summary (pdf) Paper (pdf, 102 kB) Animation (146 kB)

Dispersive imaging

M.R. Andrews, M.-O. Mewes, N.J. van Druten, D.S. Durfee,
D.M. Kurn, and W. Ketterle:

Direct, non-destructive imaging of a Bose condensate.
Science 273, 84-87 (1996).
Summary (pdf) Preprint (no figures, pdf, 88kB) Figures

BEC in DC magnetic trap

M.-O. Mewes, M.R. Andrews, N.J. van Druten,
D.M. Kurn, D.S. Durfee, and W. Ketterle:
Bose-Einstein condensation in a tightly confining dc magnetic trap.
Phys. Rev. Lett. 77, 416-419 (1996).
Summary (pdf) Paper (pdf, 129 kB Animation 1 (772 kB) 
Animation 2 (374 kB)  The cloverleaf trap Ballistic expansion

1D BEC theory

W. Ketterle and N.J. van Druten:
Bose-Einstein condensation of a finite number of particles
trapped in one or three dimensions.
Phys. Rev. A 54, 656-660 (1996).
Summary (pdf) Paper (pdf, 96 kB)

Further publications

Comprehensive review paper on evaporative cooling
W. Ketterle and N.J. van Druten:
Evaporative cooling of atoms.
Advances in Atomic, Molecular, and Optical Physics, edited by B. Bederson and H. Walther, Vol. 37, 181-236 (1996).
Paper (pdf, 5.6 MB)

Early review paper on the first experiments
W. Ketterle, M.R. Andrews, K.B. Davis, D.S. Durfee, D.M. Kurn, M.-O. Mewes,
and N.J. van Druten:
Bose-Einstein condensation of ultracold atomic gases.
Proceedings of the 15th General Conference of the Condensed Matter Division of the European Physical Society, Baveno-Stresa, April 1996.
Physica Scripta T66, 31-37 (1996).
Preprint (pdf, 205 kB)

1995

BEC of sodium

K.B. Davis, M.-O. Mewes, M.R. Andrews, N.J. van Druten,
D.S. Durfee, D.M. Kurn, and W. Ketterle:

Bose-Einstein condensation in a gas of sodium atoms.

Phys. Rev. Lett. 75, 3969-3973 (1995).
Summary (pdf) Paper (pdf, 133 kB) Animation (1.57 MB)
Three peaks gallery The optically plugged trap

Evaporative cooling

K.B. Davis, M.-O. Mewes, M.A. Joffe, M.R. Andrews, and W. Ketterle:
Evaporative cooling of sodium atoms.
Phys. Rev. Lett. 74, 5202 (1995); Erratum: Phys. Rev. Lett. 75, 2909 (1995).
Summary (pdf) Paper (pdf, 115 kB) Erratum (pdf, 43 kB) 

Model of evaporative cooling

K.B. Davis, M.-O. Mewes, and W. Ketterle:
An analytical model for evaporative cooling of atoms.
Appl. Phys. B 60, 155-159 (1995).
Summary (pdf) Preprint (no figures, pdf, 91 kB)