Lin Hongyu, Wang Xiaoqian, Yao Zhihai, Zou Dandan
Opt Express. 2020 Jun 8;28(12):17643-17652. doi: 10.1364/OE.385981.
The conventional photon blockade (CPB) for high-frequency mode is investigated in a second-order nonlinear system with Kerr nonlinearity. By solving the master equation and calculating the zero-delay-time second-order correlation function g(0), we obtain that strong photon antibunching can be achieved in this scheme. The optimal condition for strong antibunching is also calculated analytically and discussed in detail. We find that the Kerr nonlinearity can largely enhance the CPB effect in the high-frequency mode, and this scheme is not sensitive to the reservoir temperature. In addition, when compared with the linear coupled system, the system has obvious advantages in CPB implementation.
在具有克尔非线性的二阶非线性系统中研究了用于高频模式的传统光子阻塞（CPB）。通过求解主方程并计算零延迟时间二阶关联函数g(0)，我们得出在此方案中可以实现强光子反聚束。还通过解析计算得出了强反聚束的最佳条件并进行了详细讨论。我们发现克尔非线性可以在很大程度上增强高频模式下的CPB效应，并且该方案对库温度不敏感。此外，与线性耦合系统相比，该系统在CPB实现方面具有明显优势。
