High-speed InGaAs/InP-based single-photon detector with high efficiency

Xu, Lilin; Wu, E; Gu, Xiaorong; Jian, Yi; Wu, Guang; Zeng, Heping
April 2009
Applied Physics Letters;4/20/2009, Vol. 94 Issue 16, p161106
Academic Journal
An efficient single-photon detector at telecom wavelength of 1.55 μm was realized with an InGaAs/InP avalanche photodiode at -30 °C. By implementing a short gating pulse and optimizing the self-differencing circuit, a detection efficiency of 29.3% was achieved with an error count probability of 6% at the gating frequency of 200 MHz, paving the way for the high-efficiency and low-noise fast detection of the infrared single photons.


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