Gigacounts/s photon detection and its applications
Zhiliang L. Yuan, J. F. Dynes, A. R. Dixon, A. W. Sharpe, Andrew J. Shields · 2011
We report gigacounts/s photon counting using self-differencing InGaAs avalanche photodiodes. Its application to quantum key distribution has enabled a secure key-rate of 1Mb/s over 50km in laboratory and 304kb/s over 45km in the field-test.