Limit of spin squeezing in finite-temperature Bose-Einstein condensates

We show that, at finite temperature, the maximum spin squeezing achievable using interactions in Bose-Einstein condensates has a finite limit when the atom number N→∞ at fixed density and interaction strength. We calculate the limit of the squeezing parameter for a spatially homogeneous system and s...

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Bibliographic Details
Published in:Physical review letters 2011-08, Vol.107 (6), p.060404-060404, Article 060404
Main Authors: Sinatra, A, Witkowska, E, Dornstetter, J-C, Li, Yun, Castin, Y
Format: Article
Language:English
Subjects:
Condensed Matter
Physics
Quantum Gases
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Summary:We show that, at finite temperature, the maximum spin squeezing achievable using interactions in Bose-Einstein condensates has a finite limit when the atom number N→∞ at fixed density and interaction strength. We calculate the limit of the squeezing parameter for a spatially homogeneous system and show that it is bounded from above by the initial noncondensed fraction.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.107.060404