English

Spin squeezing with short-range spin-exchange interactions

Quantum Physics 2020-12-30 v3 Quantum Gases

Abstract

We investigate many-body spin squeezing dynamics in an XXZ model with interactions that fall off with distance rr as 1/rα1/r^\alpha in D=2D=2 and 33 spatial dimensions. In stark contrast to the Ising model, we find a broad parameter regime where spin squeezing comparable to the infinite-range α=0\alpha=0 limit is achievable even when interactions are short-ranged, α>D\alpha>D. A region of "collective" behavior in which optimal squeezing grows with system size extends all the way to the α\alpha\to\infty limit of nearest-neighbor interactions. Our predictions, made using the discrete truncated Wigner approximation (DTWA), are testable in a variety of experimental cold atomic, molecular, and optical platforms.

Keywords

Cite

@article{arxiv.2006.00723,
  title  = {Spin squeezing with short-range spin-exchange interactions},
  author = {Michael A. Perlin and Chunlei Qu and Ana Maria Rey},
  journal= {arXiv preprint arXiv:2006.00723},
  year   = {2020}
}

Comments

4 pages, 4 figures (15 pages, 13 figures total with appendix)

R2 v1 2026-06-23T15:57:07.698Z