声子辅助的电磁感应透明和超慢光效应的研究  

Phonon mediated electromagnetically induced transparency and ultraslow light in strongly coupled exciton-phonon systems

作　　者：姚鸣[1] 朱卡的[2] 袁晓忠[2] 蒋逸文[2] 吴卓杰[2] 

机构地区：[1]宁夏大学物理电气信息学院,银川750001 [2]上海交通大学物理系,上海200030

出　　处：《物理学报》2006年第4期1769-1773,共5页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:10274051);上海市自然科学基金(批准号:03ZR14060)资助的课题.

摘　　要：在对激子不作任何近似的条件下,对强耦合激子-声子系统中光的线性极化率进行了理论计算,证明了当信号光场频率与激子频率的失谐量等于光学声子的频率时,会出现电磁感应透明现象和超慢光效应.并且与对激子作Dyson-Maleev变换近似和玻色近似的结果进行比较,发现对激子无论是否作近似对产生电磁感应透明现象和超慢光效应都没有实质的影响.Phonon mediated electromagnetically induced ,transparency（EIT） and ultraslow light in strongly coupled exciton-phonon systems are investigated theoretically without making any approximation for excitons. It is shown that electromagnetically induced transparency mediated by phonons and the uhraslow light can occur in such systems as the signal field detuning from the exciton frequency is exactly equal to the phonon frequency. It is further shown that the phonon mediated EIT and ultraslow light calculated by using the exact exciton model is essentially the same as the numerical results obtained using the Bose approximation or the Dyson-Maleev approximation.

关 键 词：量子光学 电磁感应透明 激子 声子 

分 类 号：O431.2[机械工程—光学工程]