Unconventional magnon blockade in a dissipative photon–magnon coupling system

IF 4.4 2区物理与天体物理 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY Results in Physics Pub Date : 2024-10-22 DOI:10.1016/j.rinp.2024.108018

Xu Deng , Kai-Kai Zhang , Tao Shui , Xiao-Tao Xie , Wen-Xing Yang

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Abstract

We investigate unconventional magnon blockade (UMB) in a dissipative photon–magnon coupling cavity, where the coherent and dissipative coupling between photon and magnon can be adjusted by the position of the yttrium iron garnet sphere in the cavity. An approximate analytical solution for the statistical property of magnon is provided, which is in good agreement with the results obtained by numerically solving the Lindblad master equation. Our results indicate that UMB can be achieved in the case of dissipative photon–magnon coupling, but not in the case of coherent photon–magnon coupling. Secondly, by adjusting the amplitude of the external laser field, dynamic control of UMB can be achieved. Finally, by solving the Lindblad master equation containing the occupation number of thermal magnon and photon, the statistical properties of magnons will transition from nonclassical to classical. It is shown that the above phenomena originate from the interference between different quantum paths. Our research may provide theoretical possibilities for quantum manipulation schemes at the single-magnon level and open up a new avenue for designing single-magnon sources in a dissipative photon–magnon coupling system.

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耗散光子-磁子耦合系统中的非常规磁子封锁

我们研究了耗散光子-磁子耦合腔中的非常规磁子封锁（UMB），其中光子和磁子之间的相干和耗散耦合可以通过腔中钇铁石榴石球的位置来调整。我们提供了磁子统计特性的近似解析解，这与通过数值求解林德布拉德主方程得到的结果十分吻合。我们的结果表明，在耗散光子-磁子耦合的情况下可以实现 UMB，而在相干光子-磁子耦合的情况下则不能。其次，通过调整外部激光场的振幅，可以实现对 UMB 的动态控制。最后，通过求解包含热磁子和光子占据数的林德布拉德主方程，磁子的统计特性将从非经典过渡到经典。研究表明，上述现象源于不同量子路径之间的干涉。我们的研究可为单磁子水平的量子操纵方案提供理论上的可能性，并为在耗散光子-磁子耦合系统中设计单磁子源开辟了一条新途径。

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来源期刊

Results in Physics MATERIALS SCIENCE, MULTIDISCIPLINARYPHYSIC-PHYSICS, MULTIDISCIPLINARY

CiteScore

8.70

自引率

9.40%

发文量

754

审稿时长

50 days

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