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Hanbury Brown Twiss Effect for Ultracold Quantum Gases

M. Schellekens, Rodolphe Hoppeler, A. Perrin +4 more

We have studied two-body correlations of atoms in an expanding cloud above and below the Bose-Einstein condensation threshold. The observed correlation function for a thermal cloud shows a bunching behavior, whereas the correlation is flat for a coherent sample. These quantum correlations are the atomic analog of the Hanbury Brown Twiss effect. We observed the effect in three dimensions and studied its dependence on cloud size.

arXiv:cond-mat/0508466ScienceSep 15, 2005338 citations

Towards Treating Correlations in Bose Condensates

A. S. Jensen, O. Sørensen, D. V. Fedorov +1 more

Few-Body SystemsMay 1, 20020 citations

Two-Body Correlations and the Structure of Bose-Einstein Condensates

O. Sørensen, D. V. Fedorov, A. S. Jensen

Few-body systems. SupplementumJan 1, 20031 citation

Observation of Transverse Bose-Einstein Condensation via Hanbury Brown–Twiss Correlations

RuGway Wu, Andrew Manning, Sean S. Hodgman +4 more

A fundamental property of a three-dimensional Bose-Einstein condensate is long-range coherence; however, in systems of lower dimensionality, not only is the long-range coherence destroyed but additional states of matter are predicted to exist. One such state is a "transverse condensate," first predicted by van Druten and Ketterle [Phys. Rev. Lett. 79, 549 (1997)], in which the gas condenses in the transverse dimensions of a highly anisotropic trap while remaining thermal in the longitudinal dimension. Here, we detect the transition from a three-dimensional thermal gas to a gas undergoing transverse condensation by probing Hanbury Brown-Twiss correlations.A fundamental property of a three-dimensional Bose-Einstein condensate is long-range coherence; however, in systems of lower dimensionality, not only is the long-range coherence destroyed but additional states of matter are predicted to exist. One such state is a "transverse condensate," first predicted by van Druten and Ketterle [Phys. Rev. Lett. 79, 549 (1997)], in which the gas condenses in the transverse dimensions of a highly anisotropic trap while remaining thermal in the longitudinal dimension. Here, we detect the transition from a three-dimensional thermal gas to a gas undergoing transverse condensation by probing Hanbury Brown-Twiss correlations.

arXiv:1308.2095Physical Review LettersAug 27, 201315 citations

Revisiting the Hanbury Brown-Twiss Setup for Phase Fluctuating Bose Gases

Tarun Kanti Ghosh

The Hanbury Brown-Twiss experiment has proved to be an effective means of measuring two-point correlation function of identical particles. We analyze experimental observation of stripes formation of a phase fluctuating Bose-Einstein condensates in a highly elongated 3D traps [Dettmer {\em et al.}, Phys. Rev. Lett. {\bf 87}, 160406 (2001)] by means of axial two-point correlation functions. We also predict that the stripes are present in quasi-1D Bose gas in the mean-field as well as in the hard-core bosons regimes. These stripes can be realized by measuring the axial two-point correlation functions by using the Bragg interferometric method which is similar to the original Hanbury Brown and Twiss experimental setup.The Hanbury Brown-Twiss experiment has proved to be an effective means of measuring two-point correlation function of identical particles. We analyze experimental observation of stripes formation of a phase fluctuating Bose-Einstein condensates in a highly elongated 3D traps [Dettmer {\em et al.}, Phys. Rev. Lett. {\bf 87}, 160406 (2001)] by means of axial two-point correlation functions. We also predict that the stripes are present in quasi-1D Bose gas in the mean-field as well as in the hard-core bosons regimes. These stripes can be realized by measuring the axial two-point correlation functions by using the Bragg interferometric method which is similar to the original Hanbury Brown and Twiss experimental setup.

arXiv:cond-mat/0406503Jun 22, 20040 citations

Dynamical Formation of Correlations in a Bose-Einstein Condensate

László Erdős, Alessandro Michelangeli, Benjamin Schlein

arXiv:0808.0207Communications in Mathematical PhysicsMay 22, 200910 citations

Hanbury Brown and Twiss correlations across the Bose–Einstein condensation threshold

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