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Limit of Spin Squeezing in Finite Temperature Bose-Einstein Condensates

By Alice Sinatra, Emilia Witkowska, Jean-Christophe Dornstetter, Yun Li and Yvan Castin


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 $N\to \infty$ 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 non-condensed fraction.Comment: 4 pages, 4 figure

Topics: Condensed Matter - Quantum Gases
Year: 2011
DOI identifier: 10.1103/PhysRevLett.107.060404
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