论文标题
具有参数扩增的光力学系统中增强的光子阻滞
Enhanced photon blockade in an optomechanical system with parametric amplification
论文作者
论文摘要
我们提出了一种通过光学参数扩增（OPA）在标准的光学机制系统（OPA）中显着增强单光子阻滞效应（OPA）的方案。该方案不依赖于强的单光机电耦合，并且可能不完全抑制多光子激发的缺点。通过分析单光子封锁（1PB）机制并优化系统参数，我们获得了一个完美的1PB，具有单光子激发的高占用率，这意味着可以生成高质量，高效的单光子源。此外，我们发现，不仅两光子封锁（2pb）效应显着增强，而且在OPA存在时，发生的2pb的区域也会扩大，在这种情况下，我们还得出了最佳参数条件，以最大程度地提高两光子发射，并且同一时间强烈抑制了较高的光子激发。
We propose a scheme to enhance the single- and two-photon blockade effect significantly in a standard optomechanical system (OMS) via optical parametric amplification (OPA). The scheme does not rely on the strong single-photon optomechanical coupling and can eliminate the disadvantages of suppressing multi-photon excitation incompletely. Through analyzing the single-photon blockade (1PB) mechanism and optimizing the system parameters, we obtain a perfect 1PB with a high occupancy probability of single-photon excitation, which means that a high quality and efficient single-photon source can be generated. Moreover, we find that not only the two-photon blockade (2PB) effect is significantly enhanced but also the region of 2PB occurring is widened when the OPA exists, where we also derive the optimal parameter condition to maximize the two-photon emission and the higher photon excitations are intensely suppressed at the same time.
