Enhanced Gaussian interferometric power, entanglement and Gaussian quantum steering in magnonics system with squeezed light

TL;DR

This paper proposes a scheme to enhance quantum correlations, including Gaussian interferometric power and quantum steering, in a magnonic system using squeezed light and an optical parametric amplifier, with potential for experimental realization.

Contribution

It introduces a method to improve quantum correlations in magnonic systems using squeezing and OPA, extending previous work on quantum entanglement and steering.

Findings

Achieved about 7dB squeezing in the first magnon.

Enhanced genuine tripartite entanglement with squeezed vacuum and OPA.

Quantum correlations can be significantly improved via squeezing parameters.

Abstract

In this study, we propose a scheme to improve quantum correlations (QCs) between two magnons in a tripartite magnonical system. We use Gaussian interferometric power (GIP) to quantify QCs beyond entanglement. Additionally, Gaussian quantum steering is discussed. We investigate the enhancement of QCs via a squeezing parameter and an optical parametric amplifier (OPA). The Mancini criterion is considered to confirm the presence of shared entanglement between the two magnons. We observed a squeezing of about 7dB for the first magnon. Additionally, the squeezed vacuum field and the OPA improve the generation of genuine tripartite entanglement. We hope that current experimental technology will allow the proposed scheme to be implemented.