C
Christoph I Westbrook
Researcher at Université Paris-Saclay
Publications - 132
Citations - 5265
Christoph I Westbrook is an academic researcher from Université Paris-Saclay. The author has contributed to research in topics: Bose–Einstein condensate & Atom. The author has an hindex of 33, co-authored 126 publications receiving 4971 citations. Previous affiliations of Christoph I Westbrook include University of Michigan & Centre national de la recherche scientifique.
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Journal ArticleDOI
Observation of atoms laser cooled below the Doppler limit
Paul D. Lett,Richard N. Watts,Christoph I Westbrook,William D. Phillips,Phillip L. Gould,Harold Metcalf +5 more
TL;DR: This "Doppler cooling limit" results from the minimization of the detuning-dependent temperature at low laser power1.
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Comparison of the Hanbury Brown–Twiss effect for bosons and fermions
T. Jeltes,J. M. McNamara,Wim Hogervorst,Wim Vassen,Valentina Krachmalnicoff,M. Schellekens,Aurélien Perrin,Hong Chang,Denis Boiron,Alain Aspect,Christoph I Westbrook +10 more
TL;DR: Results show how atom–atom correlation measurements can be used to reveal details in the spatial density or momentum correlations in an atomic ensemble, and enable the direct observation of phase effects linked to the quantum statistics of a many-body system, which may facilitate the study of more exotic situations.
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Hanbury Brown Twiss effect for ultracold quantum gases
M. Schellekens,M. Schellekens,R. Hoppeler,R. Hoppeler,Aurélien Perrin,Aurélien Perrin,J. Viana Gomes,J. Viana Gomes,Denis Boiron,Denis Boiron,Alain Aspect,Alain Aspect,Christoph I Westbrook,Christoph I Westbrook +13 more
TL;DR: The observed correlation function for a thermal cloud shows a bunching behavior, whereas the correlation is flat for a coherent sample, and these quantum correlations are the atomic analog of the Hanbury Brown Twiss effect.
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A Bose-Einstein condensate of metastable atoms.
Albert Robert,O. Sirjean,Antoine Browaeys,J. Poupard,S. Nowak,Denis Boiron,Christoph I Westbrook,Alain Aspect +7 more
TL;DR: A Bose-Einstein condensate of metastable atoms (helium in the lowest triplet state) is realized and the detection scheme takes advantage of the metastability to achieve detection of individual atoms as well as of the decay products of inelastic processes.
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Observations of Density Fluctuations in an Elongated Bose Gas: Ideal Gas and Quasicondensate Regimes
Jérôme Estève,Jérôme Estève,Jean-Baptiste Trebbia,Thorsten Schumm,Alain Aspect,Christoph I Westbrook,Isabelle Bouchoule +6 more
TL;DR: In situ measurements of density fluctuations in a quasi-one-dimensional 87Rb Bose gas at thermal equilibrium in an elongated harmonic trap observe an excess of fluctuations compared to the shot-noise level expected for uncorrelated atoms.