Squeezing enhanced nonreciprocal quantum correlations via Barnett effect

TL;DR

This paper proposes a theoretical scheme to generate robust, nonreciprocal quantum correlations in a cavity optomagnonic system using the Barnett effect, with potential applications in noise-tolerant quantum devices.

Contribution

It introduces a novel method to achieve nonreciprocal quantum correlations via Barnett effect in molecular-optomagnonical systems, enhancing quantum technology capabilities.

Findings

Optimal parameters for nonreciprocal quantum correlations identified.

Entanglements remain robust at high temperatures.

Scheme enables noise-tolerant quantum correlation engineering.

Abstract

Cavity optomagnonic platforms offer a promising route for exploring quantum phenomena, particularly quantum correlations, which are vital resources for modern quantum technologies. Here, we propose a theoretical scheme for achieving nonreciprocal quantum correlations such as entanglement, and quantum discord via Barnett effect in a molecular-optomagnonical system, where a yttrium iron garnet sphere is placed in a microwave cavity that is hosting molecules. We show optimal parameter regimes for achieving nonreciprocal quantum correlations through Barnett effect. The generated entanglements are robust against thermal fluctuations, persisting even at high temperatures. Our scheme suggests a new tool for engineering noise-tolerant quantum correlations, and paves a way toward realizing novel nonreciprocal quantum devices by integrating magnons with molecular ensembles.