波导-双腔-量子点耦合系统透射谱的解析解  

Analytic solutions of photon transmission in a waveguide-two-cavities-quantum-dot system

作　　者：关欢[1] 姚培军[1] 明海[1] 

机构地区：[1]中国科学技术大学光学与光学工程系光子实验室,安徽合肥230026

出　　处：《量子电子学报》2014年第5期615-621,共7页Chinese Journal of Quantum Electronics

基　　金：国家自然科学基金(61036005);国家重点基础研究发展规划项目(2012CB922003)资助项目

摘　　要：通过波导-双腔-量子点耦合系统的哈密顿量和系统算符的海森堡运动方程推导出系统的输入-输出关系。利用格林函数理论,解析地定义了微腔和波导之间的耦合速率。并在此基础上求解系统算符的运动方程,推导出整个系统透射谱的解析形式.数值计算了整个系统透射谱与双腔之间的距离(其导致双腔与波导的耦合速率之间有一相位因子)和失谐因子之间的关系。研究发现透射谱紧密依赖于双腔距离和失谐因子。这种结构在量子信息、量子计算及光开关方面有着潜在的应用前景。Based on the waveguide-two-cavities-quantum-dot system＇s Hamiltonian and Heisenberg equation of motion for system operators, the input-output relations of the optical modes were derived. Moreover, using the Green function theory, the coupling rate between the cavity and waveguide was analytically defined. Based on the above, the analytic solution of the transmission spectra was derived. By numerical calculation, the transmission spectra of the whole system were investigated with varying optical length （which induces the phase separation between the two cavities） and detuning factor between the two cavities. The results reveal that the transmission spectra are closely dependent on the distance and detuning of the two cavities. This structure has potential applications in quantum information, quantum computation and optical switch.

关 键 词：量子光学 透射谱解析解 格林函数方法 波导-双腔-量子点系统 

分 类 号：O431.2[机械工程—光学工程]