Hanbury Brown Twiss effect for ultracold quantum gases.
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.
Schellekens
M
M
Laboratoire Charles Fabry de l'Institut d'Optique, UMR 8501 du CNRS, Centre Scientifique d'Orsay, Bâtiment 503, 91403 Orsay CEDEX, France.
Hoppeler
R
R
Perrin
A
A
Gomes
J Viana
JV
Boiron
D
D
Aspect
A
A
Westbrook
C I
CI