Quantum entanglement between two antiferromagnets in the microcavities

YANG Xiaoxiao; WANG Tiejun; WANG Chuan

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Quantum entanglement between two antiferromagnets in the microcavities

YANG Xiaoxiao 1,WANG Tiejun 1 *,WANG Chuan 2

1.Department of Science, Beijing University of Posts and Telecommunications, Beijing 100876;Department of Science, Beijing University of Posts and Telecommunications, Beijing 100876;Department of Artificial Intelligence, Beijing Normal University, Beijing 100875

2.Beijing Normal University School of Artificial Intelligence

*Correspondence author

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Funding: the National Natural Science Foundation of China under Grant （No.62131002 and 62071064)，the Fundamental Research Funds for the Central Universities of China under Grant 2019XD-A02, the Fund of State Key Laboratory of Information Photonics and Optical Commun）

Opened online: 8 April 2022

Accepted by: none

Citation: YANG Xiaoxiao,WANG Tiejun,WANG Chuan.Quantum entanglement between two antiferromagnets in the microcavities[OL]. [ 8 April 2022] http://en.paper.edu.cn/en_releasepaper/content/4757286

Magnons are being currently developed as qubits for quantum storage and information processing. Here, in this work, we focus on a hybrid quantum system containing two antiferromagnets, and entanglement between magnons in the antiferromagnets can be generated through strong coupling mediated by the same microwave mode. Moreover, we numerically simulate the process with feasible parameters. The influence of the system parameters, such as the magnon-photon coupling rate, detuning, bias magnetic field and dissipation of entanglement, are discussed. By adjusting some of the experimental parameters, we show that two antiferromagnets can produce a large entanglement, which is a result that has not been previously found in other quantum systems. Our findings may provide a potential platform for the completion of related quantum tasks in the future.

Keywords:Applied optics; Quantum entanglement; Hybrid systems; Antiferromagnets

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