Correlations in atomic systems: Diagnosing coherent superpositions
arXiv:cond-mat/0403553 · doi:10.1103/PhysRevLett.92.200401
Abstract
While investigating quantum correlations in atomic systems, we note that single measurements contain information about these correlations. Using a simple model of measurement -- analogous to the one used in quantum optics -- we show how to extract higher order correlation functions from individual "phtotographs" of the atomic sample. As a possible application we apply the method to detect a subtle phase coherence in mesoscopic superpostitions.
4 pages, 2 figures, provisionally accepted to Physical Review Letters
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