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arXiv · 2311.15667

Spin Squeezing through Collective Spin-Spin Interactions

Yanzhen Wang·Xuanchen Zhang·Yong-Chun Liu
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Abstract

Spin squeezing provides crucial quantum resource for quantum metrology and quantum information science. Here we propose that one axis-twisted (OAT) spin squeezing can be generated from free evolution under a general coupled-spin model with collective spin-spin interactions. We further propose pulse schemes to recover squeezing from parameter imperfections, and reach the extreme squeezing with Heisenberg-limited measurement precision scaling as $1/N$ for $N$ particles. This work provides a feasible method for generating extreme spin squeezing.

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Yanzhen Wang, Xuanchen Zhang, Yong-Chun Liu. 2023-11-27. Spin Squeezing through Collective Spin-Spin Interactions. https://arxiv.org/abs/2311.15667

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