Interference Between a Large Number of Independent Bose-Einstein Condensates
نویسنده
چکیده
We study theoretically the interference patterns produced by the overlap of an array of Bose-Einstein condensates that have no phase coherence among them. We show that density-density correlations at different quasimomenta, which play an important role in twocondensate interference, become negligible for large N , where N is the number of overlapping condensates. In order to understand the physics of this phenomenon, it is sufficient to consider the periodicity of the lattice and the statistical probability distribution of a randomwalk problem. The average visibility of such interference patterns decreases asN−1/2 for large N .
منابع مشابه
Interference of an array of independent Bose-Einstein condensates.
We have observed high-contrast matter wave interference between 30 Bose-Einstein condensates with uncorrelated phases. Interferences were observed after the independent condensates were released from a one-dimensional optical lattice and allowed to overlap. This phenomenon is explained with a simple theoretical model, which generalizes the analysis of the interference of two condensates.
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