论文标题
在双腔式光学系统中具有非倒数耦合的光子封锁
Photon blockade in a double-cavity optomechanical system with nonreciprocal coupling
论文作者
论文摘要
光子封锁是生成单个光子的有效方法，这在量子状态准备和量子信息处理中具有重要意义。在这里，我们研究了具有非倒数耦合的双腔磁光系统中光子的统计特性，并分别探索弱和强耦合区域中的光子阻滞。为了实现强烈的光子阻滞，我们在不同的阻滞机制下给出了最佳参数关系。此外，我们发现其各自机制下的光子阻塞表现出完全不同的行为，随着非偏置耦合的变化，可以实现完美的光子阻滞，而没有过多的光学机械耦合，即光学机械耦合（即光学机械耦合）比机械频率要小得多，这会破坏传统的启动。我们的建议为实现单光子源提供了一个可行且灵活的平台。
Photon blockade is an effective way to generate single photon, which is of great significance in quantum state preparation and quantum information processing. Here we investigate the statistical properties of photons in a double-cavity optomechanical system with nonreciprocal coupling, and explore the photon blockade in the weak and strong coupling regions respectively. To achieve the strong photon blockade, we give the optimal parameter relations under different blockade mechanisms. Moreover, we find that the photon blockades under their respective mechanisms exhibit completely different behaviors with the change of nonreciprocal coupling, and the perfect photon blockade can be achieved without an excessively large optomechanical coupling, i.e., the optomechanical coupling is much smaller than the mechanical frequency, which breaks the traditional cognition. Our proposal provides a feasible and flexible platform for the realization of single-photon source.
