Speckle Imaging of Spin Fluctuations in a Strongly Interacting Fermi Gas

20105 citationsJournal Articlegreen Open Access

Authors

Christian Sanner · MIT-Harvard Center for Ultracold Atoms

Edward Su · Massachusetts Institute of Technology

Aviv Keshet · MIT-Harvard Center for Ultracold Atoms

Wujie Huang · MIT-Harvard Center for Ultracold Atoms

Jonathon Gillen · MIT-Harvard Center for Ultracold Atoms

Ralf Gommers · MIT-Harvard Center for Ultracold Atoms

Wolfgang Ketterle

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.

Topics & Keywords

Cold Atom Physics and Bose-Einstein Condensates Complex Systems and Time Series Analysis

UN Sustainable Development Goals

Affordable and clean energy

Publication Details

Published in: DSpace@MIT (Massachusetts Institute of Technology)

Volume 42

DOI: 10.48550/arxiv.1010.1874