论文标题
在光学纳米纤维上的低温温度下，单个CDSE量子点的带电激子的出现控制激子的发生。
Occurrence control of charged exciton for a single CdSe quantum dot at cryogenic temperatures on an optical nanofiber
论文作者
论文摘要
我们使用单个量子点和光学纳米纤维的混合系统讨论了在低温温度下CDSE核/壳量子点的光发光特性。关键点是将量子点的发射物种控制为带电的激子（称为Trions），它们具有较高的中性激子的特征。我们通过改变辐照激光光的波长和强度来研究量子点的光电行为，并建立一种创建永久充电状态的方法，只要保持低温温度，该情况就可以持续使用。当前的光电法可以打开新的途径，以在量子光子学中应用CDSE量子点，并且光电量子点和光学纳米纤维的混合系统很容易适用于纤维中的单光子发电机。
We discuss photo-luminescence characteristics of CdSe core/shell quantum dots at cryogenic temperatures using a hybrid system of a single quantum dot and an optical nanofiber. The key point is to control the emission species of quantum dot to charged excitons, known as trions, which have superior characteristics to neutral excitons. We investigate the photocharging behavior for the quantum dots by varying the wavelength and intensity of irradiating laser light, and establish a method to create a permanently charged situation which lasts as long as the cryogenic temperature is maintained. The present photocharging method may open a new route to applying the CdSe quantum dots in quantum photonics, and the hybrid system of photocharged quantum-dot and optical nanofiber may readily be applicable to a fiber-in-line single-photon generator.
