Approaching the Quantum Limit of Photodetection in Solid-State Photodetectors

Many aspects of life involve sensitive photodetection, which is now widely implemented in solid-state devices made from semiconductor materials due to their relatively low cost, high scalability, and better compatibility with the existing CMOS technology. State-of-the-art Geiger-mode avalanche detectors and the challenges they faced in single-photon detection efficiency and timing resolution are c...