我国单光子探测器实现重大突破 核心指标国际领先

Core Insights - China has achieved the mass production of the world's first four-channel ultra-low noise semiconductor single-photon detector, marking a significant advancement in single-photon detection technology [1][2]. Group 1: Technological Advancements - The new single-photon detector has set world records in detection efficiency, dark noise levels, and integration, indicating that China is now leading in single-photon detection technology [1]. - The device's lowest operating temperature has been reduced from -50°C to -120°C, and at a 20% detection efficiency, the dark noise level has decreased by approximately 90% to around 100Hz [1]. - The four-channel integrated architecture of the detector is only 1/9 the size of international single-channel products, allowing it to perform complex detection tasks previously requiring multiple devices [2]. Group 2: Market Impact - The new product enhances the sensitivity for detecting extremely weak light, increasing the maximum detection efficiency from 25% to 35% [2]. - The product is already serving top domestic research institutions and has the capability for mass production and delivery [3]. - The advancements in this technology not only break international technological monopolies but also enhance China's self-sufficiency in key quantum information technologies [2].