Second-order coherence of a Bose-Einstein condensate
نویسنده
چکیده
The interference observed between two Bose-Einstein condensates demonstrated clearly the long-range coherence of a Bose condensate [1]. The fringe contrast is directly related to first-order coherence. Our paper [2] showed that previous measurements of the interaction energy of a condensate can be reinterpreted as a measure for second-order coherence and therefore provide direct evidence for the suppression of density fluctuations in a condensate compared to a thermal cloud. The same conclusion was reached for third-order coherence, which was measured through the observation of threebody collisions [3].
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تاریخ انتشار 2001