Related papers: Squeezing Classical Antiferromagnets into Quantum Spin Liquids via Global Cavity Fluctuations

Squeezing Classical Antiferromagnets into Quantum Spin Liquids via Global Cavity Fluctuations

URL: http://arxiv.org/abs/2512.05630v1
Date: Fri, 05 Dec 2025 11:20:35 GMT
Title: Squeezing Classical Antiferromagnets into Quantum Spin Liquids via Global Cavity Fluctuations
Authors: Charlie-Ray Mann, Mark A. Oehlgrien, Błażej Jaworowski, Giuseppe Calajó, Jamir Marino, Kyung S. Choi, Darrick E. Chang,
Abstract summary: We show that cavity quantum electromagnets can be a surprising resource for inducing strongly correlated phenomena.<n>This work suggests that cavity QED can be a surprising resource for inducing strongly correlated phenomena.
Score: 0.04886133657045216
License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Abstract: Cavity quantum electrodynamics with atomic ensembles is typically associated with collective spin phenomena, such as superradiance and spin squeezing, in which the atoms evolve collectively as a macroscopic spin ($S\sim N/2$) on the Bloch sphere. Surprisingly, we show that the tendency toward a collective spin description need not imply collective spin phenomena; rather, it can be exploited to generate new forms of strongly correlated quantum matter. The key idea is to use uniform cavity-mediated interactions to energetically project the system into the total-spin singlet sector ($S=0$) - a highly entangled subspace where the physics is governed entirely by cavity fluctuations. Focusing on Rydberg atom arrays coupled to a single-mode cavity, we show that global cavity fluctuations can effectively squeeze classical antiferromagnets into quantum spin liquids, characterized by non-local entanglement, fractionalized excitations, and emergent gauge fields. This work suggests that cavity QED can be a surprising resource for inducing strongly correlated phenomena, which could be explored in the new generation of hybrid tweezer-cavity platforms.

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