Controlling magnon-magnon entanglement and steering by atomic coherence

Author:

Zheng Li-Li1,Shi Wenxing1,Shen Kang2,Kong Deyi,Wang FeiORCID

Affiliation:

1. Jianghan University

2. Central China Normal University

Abstract

Here we show that it is possible to control magnon-magnon entanglement in a hybrid magnon-atom-cavity system based on atomic coherence. In a four-level V-type atomic system, two strong fields are applied to drive two dipole-allowed transitions and two microwave cavity modes are coupled with two dipole forbidden transitions as well as two magnon modes simultaneously. It is found that the stable magnon-magnon entanglement, one-way steering and two-way EPR steering can be generated and controlled by atomic coherence according to the following two points: (i) the coherent coupling between magnon and atoms is established via exchange of virtual photons; (ii) the dissipation of magnon mode is dominant over amplification since one of the atomic states mediated one-channel interaction always keeps empty. The coherent control of magnon-magnon correlations provides an effective approach to modify macroscopic quantum effects using the laser-driven atomic systems.

Funder

National Natural Science Foundation of China

Jianghan University Natural Science General Project

Publisher

Optica Publishing Group

Subject

Atomic and Molecular Physics, and Optics

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1. Double cavity magnomechanical system with bipartite entanglement;The European Physical Journal Plus;2024-07-07

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