Nonlinear pumping induced multipartite entanglement in a hybrid magnon cavity QED system

Ying, Zhou; Xie, Shuangyuan; Zhu, Chengjie; Yang, Yunyi

doi:10.1103/physrevb.106.224404

Cited by 8 publications

(1 citation statement)

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“…And Zhong et al [31] recently presented that the macroscopic tripartite entanglement and steering of three YIG spheres can be achieved by a squeezed reservoir. Moreover, the multipartite quantum correlations among the magnons, photons, phonons, and atoms have been studied [32][33][34][35][36][37].…”

Section: Introductionmentioning

confidence: 99%

Nonreciprocal macroscopic tripartite entanglement in atom-optomagnomechanical system

Zheng,

Zhong,

Cheng

et al. 2024

EPJ Quantum Technol.

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We investigate how to generate the nonreciprocal macroscopic tripartite entanglement among the atomic ensemble, ferrimagnetic magnon and mechanical oscillator in a hybrid atom-optomagnomechanical system, where an ensemble of two-level atoms and a yttrium iron garnet micro-bridge supporting the magnon and mechanical modes are placed in a spinning optical resonator driven by a laser field. The phonon being the quantum of the mechanical mode interacts with the magnon and the optical photon via magnetostriction and radiation pressure, respectively, and meanwhile the photon couples to the atomic ensemble. The results show that not only all bipartite entanglements but also the genuine tripartite entanglement among the atomic ensemble, magnon and phonon could be generated at the steady state. Moreover, the nonreciprocity of atom-magnon-phonon entanglement can be obtained with the aid of the optical Sagnac effect by spinning the resonator, in which the entanglement is present in a chosen driving direction but disappears in the other direction. The nonreciprocal macroscopic tripartite entanglement is robust against temperature and could be flexibly controlled by choosing the system parameters. Our work enriches the study of macroscopic multipartite quantum states, which may have potential applications in the development of quantum information storage and the construction of multi-node chiral quantum network.

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