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Low-noise single-photon detection at wavelength 1.55 μm

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4 Author(s)
P. A. Hiskett ; Dept. of Phys., Heriot-Watt Univ., Edinburgh, UK ; J. M. Smith ; G. S. Buller ; P. D. Townsend

The photon-counting performance of commercially available InGaAs/InP avalanche photodiodes operated in Geiger mode was investigated at temperatures between 77 and 260 K. In particular, their noise equivalent power was measured to be 4×10-17 WHz -1/2 at 77 K. The implications of these results in the context of a quantum cryptography application are discussed

Published in:

Electronics Letters  (Volume:37 ,  Issue: 17 )