Xu Chenmin, Sheng Chong, Zhu Shining, Liu Hui
Opt Express. 2021 May 24;29(11):16727-16735. doi: 10.1364/OE.425619.
How to utilize topological microcavities to control quantum emission is one of the ongoing research topics in the optical community. In this work, we investigate the emission of quantum emitters in a doubly-resonant topological Tamm microcavity, which can simultaneously achieve dual resonances at two arbitrary wavelengths according to the needs of practical application. To achieve the enhancement of quantum emission in such cavities, we have exploited the tunable doubly-resonant modes, in which one of resonant modes corresponds to the pump laser wavelength and the other one is located at the emission wavelength of quantum emitters. Both theoretical and experimental results demonstrate that the pump excitation and emission efficiencies of quantum emitters are greatly enhanced. The main physical mechanism can be explained by the doubly-resonant cavity temporal coupled-mode theory. Furthermore, we observe the faster emission rate and the higher efficiency of unidirectional quantum emission, which have promising applications in optical detection, sensing, filtering, and light-emitting devices.
如何利用拓扑微腔来控制量子发射是光学领域正在进行的研究课题之一。在这项工作中，我们研究了双共振拓扑塔姆微腔中量子发射器的发射情况，该微腔可根据实际应用需求在两个任意波长处同时实现双共振。为了在这种微腔中实现量子发射的增强，我们利用了可调谐双共振模式，其中一个共振模式对应于泵浦激光波长，另一个位于量子发射器的发射波长处。理论和实验结果均表明，量子发射器的泵浦激发和发射效率得到了极大提高。主要物理机制可以用双共振腔时间耦合模理论来解释。此外，我们观察到了更快的发射速率和更高的单向量子发射效率，这在光学检测、传感、滤波和发光器件等方面具有广阔的应用前景。
