QDRTD单光子探测技术

Single photon detection technology based on quantum-dot resonant tunneling diodes

量子信息技术的发展对单光子探测器提出了更高的性能要求,新型的量子点单光子探测器展现出了很好的性能和发展潜力。研究了一种基于量子点共振隧道二极管(QDRTD)的单光子探测器,介绍了QDRTD的基本结构和原理,重点对其内部电子传输特性和I-V特性进行了分析,并进行了结构优化,可满足单光子探测中多种波长选择的需求,为QDRTD多波长单光子探测的光子响应特性、探测效能等研究奠定了基础。同时,分析结果表明:QDRTD单光子探测器在光子响应、暗电流、波长选择等多个方面都具备很好的特性,具有广阔的应用前景。

The rapid development of quantum information technology requests the higher performance of single photon detector. As a new-style single photon detector, quantum-dot based single photon detector has showed good performance and development potential. A style of single photon detector based on quantum-dot resonant tunneling diodes（QDRTD） was studied. The basic structure and working principle of QDRTD were introduced, and it laid stress on the analysis of interior electron transmission characteristics and I-V characteristics of QDRTD. Based on the above research, the structure of QDRTD was optimally designed, which could meet the needs of multi-wavelength single photon detection and laid the groundwork for the future studies on photon response characteristic and detection efficiency of multi- wavelength single photon detection. In addition, the study results show that QDRTD single photon detector has good characteristics in many aspects, such as photon response, dark current, wavelength choice and so on, which provides a broad application prospects.