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Connected correlations in cold atom experiments
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DOI：10.5802/crphys.274.png)
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Abstract
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The recent development of single-atom-resolved probes has made full counting statistics measurements accessible in quantum gas experiments. This capability provides access to high-order moments of physical observables, from which cumulants, or equivalently connected correlations, can be precisely determined. Through a selection of recent cold atom experiments, this article illustrates the significance of connected correlations in characterizing ensembles of interacting quantum particles. First, non-zero connected correlations of order n >2 unambiguously identify non-Gaussian quantum states. Second, connected correlations of order n identify clusters made of n elements whose statistical properties are irreducible to combinations of smaller clusters. The ability to identify such multi-particle clusters offers an interesting perspective on strongly correlated quantum states of matter at the microscopic scale.
Keywords:
Ultracold atoms
strongly correlated matter
connected correlations
non-Gaussian states
Journal
C
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1.2
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18
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2.6K
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Cited Papers
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