Instituto de Física, Universidad de Antioquia, AA 1226 Medellín, Colombia.
J Phys Condens Matter. 2011 Jul 6;23(26):265304. doi: 10.1088/0953-8984/23/26/265304. Epub 2011 Jun 15.
We present a study of the strong coupling between radiation and matter, considering a system of two quantum dots, which are in mutual interaction and interact with a single mode of light confined in a semiconductor nanocavity. We take into account dissipative mechanisms such as the escape of the cavity photons, decay of the quantum dot excitons by spontaneous emission, and independent exciton pumping. It is shown that the mutual interaction between the dots can be measured off-resonance only if the strong coupling condition is reached. Using the quantum regression theorem, a reasonable definition of the dynamical coupling regimes is introduced in terms of the complex Rabi frequency. Finally, the emission spectrum for relevant conditions is presented and compared with the above definition, demonstrating that the interaction between the excitons does not affect the strong coupling.
我们研究了辐射与物质之间的强耦合，考虑了一个由两个量子点组成的系统，这两个量子点相互作用并与限制在半导体纳米腔中的单个光模相互作用。我们考虑了耗散机制，如腔光子的逃逸、量子点激子通过自发辐射的衰减以及独立激子泵浦。结果表明，只有在达到强耦合条件的情况下，才能在非共振情况下测量到点之间的相互作用。使用量子回归定理，根据复拉比频率引入了动态耦合状态的合理定义。最后，给出了相关条件下的发射光谱，并与上述定义进行了比较，证明了激子之间的相互作用不会影响强耦合。
