Short-wave Infrared Single Photon Detection With Linear Mode Avalanche Photodiode

使用线性模式雪崩光电二极管进行短波红外单光子检测

• 批准号: EP/Y020855/1
• 负责人: Xin Yi
• 金额: $ 45.88万
• 依托单位: Heriot-Watt University
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2024
• 资助国家: 英国
• 起止时间: 2024 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FY020855%2F1
• 关键词: Short; wave; Infrared; Single; Photon

The advantage of single photon detectors is that they can be used for enhanced imaging, secure communication and powerful computing. These have the potential to transform how we live, work and interact with the world, for example, having unbreakable encrypted telecommunications by quantum key distribution, enabling LiDAR systems and environmental gas sensing by time-correlated single photon counting. Detecting an individual quantum of light (a single photon) provides you with the ultimate sensitivity. The ideal detector needs to have an extremely high detection efficiency at all short-wave infrared (SWIR) wavelengths, very low noise, high speed, excellent timing resolution, user-friendly, low cost and be capable of use at room temperature.Although there are several available SWIR detectors, a detector that fulfils all these requirements does not exist yet. Recently, using novel III-V materials and band structure engineered structures, we have seen a paradigm shift in the performance of SWIR detectors. In this project, we aim to design and fabricate novel extremely low excess noise InP-based linear mode-avalanche photodiodes capable of detecting single photons, and evaluate them in several emerging applications. This new class of quantum detector will outperform the existing devices, and their demonstration would open new opportunities for emerging applications in areas such as national security and climate change challenges.

单光子探测器的优势在于它们可用于增强成像、安全通信和强大的计算。这些有可能改变我们的生活、工作和与世界互动的方式，例如，通过量子密钥分配实现牢不可破的加密电信，通过时间相关的单光子计数实现激光雷达系统和环境气体传感。检测单个光量子（单个光子）可为您提供终极灵敏度。理想的探测器需要在所有短波红外（SWIR）波长下具有极高的探测效率、极低的噪声、高速度、出色的定时分辨率、用户友好、低成本并且能够在室温下使用。尽管有多种可用的短波红外探测器，但满足所有这些要求的探测器尚不存在。最近，通过使用新型 III-V 族材料和能带结构工程结构，我们看到了短波红外探测器性能的范式转变。在这个项目中，我们的目标是设计和制造新型极低过量噪声的基于 InP 的线性模式雪崩光电二极管，能够检测单光子，并在几个新兴应用中对其进行评估。这种新型量子探测器的性能将优于现有设备，其演示将为国家安全和气候变化挑战等领域的新兴应用带来新的机遇。