pith. sign in

arxiv: 2006.00723 · v3 · pith:PGDPKV44new · submitted 2020-06-01 · 🪐 quant-ph · cond-mat.quant-gas

Spin squeezing with short-range spin-exchange interactions

classification 🪐 quant-ph cond-mat.quant-gas
keywords alphainteractionssqueezingspinlimitmodelachievableapproximation
0
0 comments X
read the original abstract

We investigate many-body spin squeezing dynamics in an XXZ model with interactions that fall off with distance $r$ as $1/r^\alpha$ 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 $\alpha=0$ limit is achievable even when interactions are short-ranged, $\alpha>D$. A region of "collective" behavior in which optimal squeezing grows with system size extends all the way to the $\alpha\to\infty$ 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.

This paper has not been read by Pith yet.

discussion (0)

Sign in with ORCID, Apple, or X to comment. Anyone can read and Pith papers without signing in.