Enhanced and reduced atom number fluctuations in a BEC splitter
Quantum Physics
2015-05-18 v1 Quantum Gases
Abstract
We measure atom number statistics after splitting a gas of ultracold 87Rb atoms in a purely magnetic double-well potential created on an atom chip. Well below the critical temperature for Bose-Einstein condensation T_c, we observe reduced fluctuations down to -4.9dB below the atom shot noise level. Fluctuations rise to more than +3.8dB close to T_c, 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 super-shot noise fluctuations directly originate from quantum statistics.
Keywords
Cite
@article{arxiv.1005.1922,
title = {Enhanced and reduced atom number fluctuations in a BEC splitter},
author = {Kenneth Maussang and G. Edward Marti and Tobias Schneider and Philipp Treutlein and Yun Li and Alice Sinatra and Romain Long and Jérôme Estève and Jakob Reichel},
journal= {arXiv preprint arXiv:1005.1922},
year = {2015}
}