Correlations in atomic systems: Diagnosing coherent superpositions

Details Correlations in atomic systems: Diagnosing coherent superpositions Correlations in atomic systems: Diagnosing coherent superpositions

2004-03-22

arxiv.org/abs/cond-mat/0403553v1

Phys. Rev. Lett 92, 200401 (2004)

Physics

Condensed Matter

Soft Condensed Matter

4 pages, 2 figures, provisionally accepted to Physical Review Letters

Scientific paper

10.1103/PhysRevLett.92.200401

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.

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