RUI: Optimizing the Performance of Quantum-Dot-Based Single-Photon Detectors

该计划旨在研究和开发单光子探测器，该探测器采用与捕获量子点中的光激发载流子相关的光导增益区域。这些探测器具有独特的感知单个光子的能力，是线性光学量子计算和量子通信安全的关键使能技术。此外，量子中继器的实现需要对量子信息进行存储。基于量子点的探测器具有在这两种能力中发挥作用的独特能力，可能在发展量子网络中发挥重要作用。威斯康星大学拉克罗斯分校物理系有大约150个专业，并在物理和工程方面提供光学重点课程。这个合作研究项目将帮助威斯康星大学洛杉矶分校吸引对光电子和量子技术感兴趣的学生，并为他们未来在这些领域的职业生涯做好准备。拟议的研究将由威斯康星大学洛杉矶分校的PI和NIST-Boulder的Richard Mirin博士共同努力。目标是推进基于量子点的单光子探测器的状态，使这些设备适合实际应用。PI将设计单光子探测器，进行测量，建立探测系统模型，并分析数据。NIST的研究小组将使用最先进的分子束外延系统培养原型样品，并在他们的洁净室设施中制造设备。此次合作的目标是提高单光子探测器的数量分辨率、速度和效率，同时通过优化探测电路和将器件与固体浸没透镜和光学腔集成来提高其工作温度。这些新型探测器为线性光学量子计算、提高量子通信的安全性以及研究光的量子性质提供了关键的使能技术。

This program is to study and develop single-photon detectors that employ photoconductive gain regions associated with trapping photo-excited carriers in quantum dots. These detectors have a unique ability to sense individual photons and are a key enabling technology for linear optics quantum computing and the security of quantum communications. In addition, the realization of quantum repeaters requires the storage of quantum information. Quantum-dot-based detectors have the unique ability to function in both capacities and may play a fundamental role in developing quantum networks. The UW-La Crosse Physics Department has ~150 majors and offers an optics emphasis track in physics and engineering. This collaborative research program will help UW-L attract students interested in optoelectronics and quantum technologies and prepare them for future careers in these fields. The proposed research will be a collaborative effort between the PI at UW-L and Dr. Richard Mirin at NIST-Boulder. The goal is to advance the state of quantum-dot-based single-photon detectors, making these devices suitable for practical applications. The PI will design the single-photon detectors, conduct measurements, model the detection system, and analyze the data. The research group at NIST will grow prototype samples using to a state-of-the-art molecular beam epitaxy system and fabricate the devices in their clean-room facilities. The goals of this collaboration are to improve the number resolution, speed, and efficiency of the single-photon detectors while raising their operating temperature by optimizing the detection circuitry and integrating the devices with solid-immersion lenses, and optical cavities. These novel detectors provide a key enabling technology for linear-optics quantum computing, for increasing the security of quantum communications, and for studying the quantum nature of light.