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arXiv 1010.1874cond-mat.quant-gasphysics.atom-ph
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强相互作用费米气体自旋涨落的散斑成像

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

摘要:

研究了强相互作用费米子气体沿BEC-BCS交叉的自旋涨落和密度涨落。这是通过色散散斑图案的原位成像来完成的。压缩率和磁化率由测量的波动确定。这种新的灵敏的方法很容易地解决了由于配对而导致的低于散粒噪声的自旋涨落的十倍抑制,并且可以应用于光晶格中的新的磁相。

英文摘要:

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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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