Spin Squeezing with Short-Range Spin-Exchange Interactions

Spin Squeezing with Short-Range Spin-Exchange Interactions
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自旋挤压与短程自旋交换相互作用

DOI:
10.1103/physrevlett.125.223401
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发表时间:
2020
影响因子:
8.6
通讯作者:
Rey, Ana Maria
Rey, Ana Maria
中科院分区:
物理与天体物理1区
文献类型:
--
作者:
Perlin, Michael A.;Qu, Chunlei;Rey, Ana Maria

文献摘要

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我们研究了一个模型中的多体自旋压缩动力学,该模型中的相互作用随距离和三维空间的变化而下降。与伊辛模型形成鲜明对比的是,我们发现一个广泛的参数制度,自旋压缩可比的无限程极限是可以实现的,即使相互作用是短程的。一个区域的“集体”行为,其中最佳压缩增长与系统的大小一直延伸到thelimit最近邻相互作用。我们的预测,使用离散截断维格纳近似,在各种实验冷原子,分子和光学平台是可测试的。
We investigate many-body spin squeezing dynamics in anmodel with interactions that fall off with distanceasinand 3 spatial dimensions. In stark contrast to the Ising model, we find a broad parameter regime where spin squeezing comparable to the infinite-rangelimit is achievable even when interactions are short ranged,. A region of “collective” behavior in which optimal squeezing grows with system size extends all the way to thelimit of nearest-neighbor interactions. Our predictions, made using the discrete truncated Wigner approximation, are testable in a variety of experimental cold atomic, molecular, and optical platforms.