Control of spontaneous emission dynamics in microcavities with chiral exceptional surfaces
Control of spontaneous emission dynamics in microcavities with chiral exceptional surfaces
复制标题
DOI：
10.1103/physrevresearch.3.013220
复制
发表时间：
2021-03-08
影响因子：
4.2
通讯作者：
El-Ganainy, R.
中科院分区：
文献类型：
--
作者：
Zhong, Q.;Hashemi, A.;El-Ganainy, R.
我们研究了位于微谐振腔模式体积内的量子发射体的自发辐射，该谐振腔具有手性例外点。我们表明，这种配置提供了足够的自由度，表现出完全的控制，无论是增强或抑制的排放过程。特别是，我们证明了珀塞尔因子可以增强的两倍，超出其值在一个相同的microbial在一个恶魔点操作。我们的结论，这是来自使用非厄米哈密顿形式主义，证实了采用全波模拟现实的光子结构和材料。我们的研究结果提供了一个简单的路线，以提高单光子源的性能，使用当前的光子学技术，而不需要建立光学谐振器的质量因子或纳米级的体积。
We investigate spontaneous emission from a quantum emitter located within the mode volume of a microring resonator that features chiral exceptional points. We show that this configuration offers enough degrees of freedom to exhibit a full control to either enhance or suppress the emission process. Particularly, we demonstrate that the Purcell factor can be enhanced by a factor of two beyond its value in an identical microring operating at a diabolic point. Our conclusions, which are derived using a non-Hermitian Hamiltonian formalism, are confirmed by employing full-wave simulations of realistic photonic structures and materials. Our results offer a straightforward route to improve the performance of single photon sources using current photonics technology without the need for building optical resonators with ultrahigh quality factors or nanoscale volumes.