We investigate many-body spin squeezing dynamics in an XXZ model with interactions that fall off with distance r as 1/rα in D=2 and 3 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 limit is achievable even when interactions are short-ranged, α>D. A region of "collective" behavior in which optimal squeezing grows with system size extends all the way to the α→∞ 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.
@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)