利用三阶非线性介质实现光子反聚束和非传统光子阻塞

Antibunching and unconventional photon blockade with third-order nonlinearity

基于三阶克尔非线性的非传统光子阻塞,计算由一个耦合弱克尔非线性介质的光学腔和一个机械振子组成的系统的归一化二阶关联函数,获得了强的光子反聚束效应及强反聚束的优化条件.数值模拟表明:零延时二阶关联函数的稳态解与模拟数值结果相吻合;优化条件下,三阶非线性相互作用系数取较大值时可获得强反聚束效应.

The unconventioanal photon blockade is based onχ（3）Kerr nonliearity.The normalized secondorder correlation function is calculated for a system of a cavity modes with weak Kerr nonlinearity and a mechanical resonaor.The optimal conditions for strong antibunching are found by analytic calculations,which coincide well with the numerical results.The numerical simulation shown that the steady solution of the two order correlation function at zero delay are very good with the numerical results.When the Kerr non-linear interaction strength is larger,the effect of strong antibunching is remarkable under the optimal conditions.