Efficient photon number detection with silicon avalanche photodiodes
O. Thomas, Zhiliang L. Yuan, J. F. Dynes +2 more
We demonstrate an efficient photon number detector for visible wavelengths using a fast-gated silicon avalanche photodiode. Using sub-nanosecond voltage gates with a self-differencing circuit, the device is able to resolve up to four photons in an incident optical pulse, with a detection probability of up to 91.1 % at 1 GHz. With this performance and close to room temperature operation, fast-gated silicon avalanche photodiodes are ideal for optical quantum information processing that requires single-shot photon number detection.
Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE•Feb 10, 2011•2 citations