厚锥形纳米线中量子点蓝绿单光子发射的定量分析
Quantitative analysis of the blue-green single-photon emission from a quantum dot in a thick tapered nanowire
摘要：
量子点作为单光子发射器在蓝绿色范围内的制造和其特征在于在低温下。它们由插入具有厚壳的（Zn，Mg）Se纳米线中的CdSe点组成。在非共振连续波和脉冲激发下测量了其光致发光谱、衰减曲线和自相关函数。一种分析方法同时适用于衰减曲线和关联函数。它允许这两个量是如何受到激子上升，由于双激子馈电，明亮的激子衰减，暗激子的效果，和两个激光脉冲之间的再激发的定量描述。记录在我们的分辨率极限（200 $μ$ eV）下的线宽。报道的相关计数从通过从陷阱再激发的完全控制变化到通过移动载体或其他QD的再激发的小贡献，低至5%。
英文摘要：
Quantum dots acting as single photon emitters in the blue-green range are fabricated and characterized at cryogenic temperature. They consist in CdSe dots inserted in (Zn,Mg)Se nanowires with a thick shell. Photoluminescence spectra, decay curves and autocorrelation functions were measured under nonresonant continuous-wave and pulsed excitation. An analytical approach is applied simultaneously to the decay curves and correlation functions. It allows a quantitative description of how these two quantities are affected by the exciton rise due to biexciton feeding, the bright exciton decay, the effect of the dark exciton, and the re-excitation between two laser pulses. Linewidths at our limit of resolution (200 $μ$eV) are recorded. The reported correlation counts vary from a full control by re-excitation from traps, to a small contribution of re-excitation by mobile carriers or other QDs, as low as 5%.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
