Laboratoire Kastler Brossel, Ecole Normale Supérieure, UPMC and CNRS, Paris, France.
Phys Rev Lett. 2011 Aug 5;107(6):060404. doi: 10.1103/PhysRevLett.107.060404. Epub 2011 Aug 3.
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.
我们表明，在有限温度下，当原子数 N 在固定密度和相互作用强度下趋于无穷大时，使用玻色-爱因斯坦凝聚体中的相互作用实现的最大自旋压缩具有有限极限。我们计算了均匀系统的压缩参数的极限，并表明它受到初始未凝聚部分的上限限制。
