Speckle Imaging of Spin Fluctuations in a Strongly Interacting Fermi Gas

Author(s)
Sanner, Christian Burkhard; Su, Edward Joseph; Keshet, Aviv; Huang, Wujie; Gillen, Jonathon Isaiah; ... Show more
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Abstract
Spin fluctuations and density fluctuations are studied for a two-component gas of strongly interacting fermions along the Bose-Einstein condensate-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.
Date issued
2011-01
URI
http://hdl.handle.net/1721.1/64778
Department
Massachusetts Institute of Technology. Department of Physics; Massachusetts Institute of Technology. Research Laboratory of Electronics; MIT-Harvard Center for Ultracold Atoms
Journal
Physical review letters
Publisher
American Physical Society
Citation
Sanner, Christian et al. “Speckle Imaging of Spin Fluctuations in a Strongly Interacting Fermi Gas.” Physical Review Letters 106.1 (2011) : n. pag. © 2011 The American Physical Society
Version: Final published version
ISSN
0031-9007
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