Yu Yi-Cong, Liu Jing-Feng, Zhuo Xiao-Lu, Chen Gengyan, Jin Chong-Jun, Wang Xue-Hua
Opt Express. 2013 Oct 7;21(20):23486-97. doi: 10.1364/OE.21.023486.
We investigate the light emission characteristics for single two level quantum dot (QD) in a realistic photonic crystal (PC) L3 cavity based upon the local coupling strength between the QD and cavity together with the Green's function in which the propagation function related to the position of the detector is taken into account. We find for a PC cavity that the line shape of the propagation function in frequency domain is identical to that of the cavity and independent on the detector's position. We confirm that this identity is not influenced by the horizontal decay of the cavity. Furthermore, it is revealed that the vacuum fluorescence spectrum of the coupled system never give the triplet in strong coupling regime. Our work demonstrates that the experimental spectral-triplet in coupled system of single QD and PC cavity cannot be individually understood by vacuum Rabi splitting without including other physics mechanism.
基于量子点（QD）与腔之间的局部耦合强度以及格林函数，其中考虑了与探测器位置相关的传播函数，我们研究了实际光子晶体（PC）L3腔中单个二能级量子点的发光特性。我们发现对于PC腔，频域中传播函数的线形与腔的线形相同，且与探测器位置无关。我们证实这种一致性不受腔的横向衰减影响。此外，研究表明耦合系统的真空荧光光谱在强耦合 regime 中不会出现三重态。我们的工作表明，单量子点与PC腔耦合系统中的实验光谱三重态，如果不考虑其他物理机制，仅通过真空拉比分裂无法单独理解。
