We investigate magnon statistics in a qubit-magnon hybrid quantum system in which an effective appreciable qubit-magnon coupling can be realized by exchanging virtual cavity photons. A conventional magnon blockade and two types of unconventional magnon blockades are proposed, respectively, based on three different physical mechanisms. We verify theoretically that a magnon blockade can occur in strong, weak, and moderate qubit-magnon coupling regimes. It is interesting that an asymmetry structure for magnon anti-bunching can be observed in the case of the moderate qubit-magnon coupling strength, especially where the quantum interference can significantly relax the requirement of the larger coupling strength between the qubit and magnon mode. All of the approximate analytical results for strong magnon anti-bunching are in good agreement with those obtained by numerical simulations. Our results provide a promising pathway for coherent manipulation in single magnon level, which has potential applications for quantum information processing and preparation of single magnon sources.

中文翻译：

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量子位-磁振子混合量子系统中的常规和非常规磁振子封锁

我们研究了量子位-马农混合量子系统中的马农统计，在其中通过交换虚拟腔光子可以实现有效的可观的量子-马农耦合。基于三种不同的物理机制，分别提出了常规的马农封锁和两种非常规的马农封锁。我们从理论上验证了在强，弱和中等量子位-磁振子耦合机制中会发生磁振子阻塞。有趣的是，在中等量子比特-磁振子耦合强度的情况下，可以观察到用于磁振子抗聚束的不对称结构，特别是在量子干扰可以显着缓解量子比特与磁振子模式之间更大耦合强度的要求的情况下。强磁振子反聚束的所有近似分析结果均与通过数值模拟获得的结果吻合良好。我们的研究结果为单磁振子水平的相干操纵提供了一条有希望的途径，它在量子信息处理和单磁振子源的制备方面具有潜在的应用。