论文标题
非线性平价时间对称腔中强大的光子传播
Robust photon transmission in nonlinear parity-time-symmetric cavities
论文作者
论文摘要
我们探索两个耦合腔的非线性平价时间对称系统中的光子转移，其中包含取决于腔内光子的非线性增益和损耗。稳态的分析解决方案可产生饱和的增益，从而满足平均时间对称性。特征频率自适应非线性饱和增益，以达到稳态下的最大效率。我们发现，弱耦合方案中的饱和增益与稳定状态下的损失不符，表现出自发对称性破裂的外观。平均时间对称态度的光子传输效率与耦合强度的变化具有鲁棒性，从而通过调整频率或耦合强度来维持最佳效率来改善常规方法的结果。我们的方案提供了一个实验平台，用于实现具有非线性平等时间对称性腔中稳健的光子传递。
We explore the photon transfer in the nonlinear parity-time-symmetry system of two coupled cavities, which contains nonlinear gain and loss dependent on the intracavity photons. Analytical solution to the steady state gives a saturated gain, which satisfy the parity-time symmetry automatically. The eigen-frequency self-adapts the nonlinear saturated gain to reach the maximum efficiency in the steady state. We find that the saturated gain in the weak coupling regime does not match the loss in the steady state, exhibiting an appearance of a spontaneous symmetry-breaking. The photon transmission efficiency in the parity-time-symmetric regime is robust against the variation of the coupling strength, which improves the results of the conventional methods by tuning the frequency or the coupling strength to maintain optimal efficiency. Our scheme provides an experimental platform for realizing the robust photon transfer in cavities with nonlinear parity-time symmetry.
