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27 April 2024

» arxiv » 1010.1874

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Speckle Imaging of Spin Fluctuations in a Strongly Interacting Fermi Gas
Christian Sanner ; Edward J. Su ; Aviv Keshet ; Wujie Huang ; Jonathon Gillen ; Ralf Gommers ; Wolfgang Ketterle ;
Date:	9 Oct 2010
Abstract:	Spin fluctuations and density fluctuations are studied for a two-component gas of strongly interacting fermions along the BEC-BCS crossover. This is done by in-situ imaging of dispersive speckle patterns. Compressibility and magnetic susceptibility are determined from the measured fluctuations. This new sensitive method easily resolves a tenfold suppression of spin fluctuations below shot noise due to pairing, and can be applied to novel magnetic phases in optical lattices.
Source:	arXiv, 1010.1874
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