Abstract
We measure atom number statistics after splitting a gas of ultracold atoms in a purely magnetic double-well potential created on an atom chip. Well below the critical temperature for Bose-Einstein condensation , we observe reduced fluctuations down to below the atom shot noise level. Fluctuations rise to more than close to , before reaching the shot noise level for higher temperatures. We use two-mode and classical field simulations to model these results. This allows us to confirm that the supershot noise fluctuations directly originate from quantum statistics.
- Received 11 May 2010
DOI:https://doi.org/10.1103/PhysRevLett.105.080403
© 2010 The American Physical Society