TITLE

Efficient photon number detection with silicon avalanche photodiodes

AUTHOR(S)
Thomas, O.; Yuan, Z. L.; Dynes, J. F.; Sharpe, A. W.; Shields, A. J.
PUB. DATE
July 2010
SOURCE
Applied Physics Letters;7/19/2010, Vol. 97 Issue 3, p031102
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We demonstrate an efficient photon number detector for visible wavelengths using a silicon avalanche photodiode. Under subnanosecond gating, the device is able to resolve up to four photons in an incident optical pulse. The detection efficiency at 600 nm is measured to be 73.8%, corresponding to an avalanche probability of 91.1% of the absorbed photons, with a dark count probability below 1.1×10-6 per gate. With this performance and operation close to room temperature, fast-gated silicon avalanche photodiodes are ideal for optical quantum information processing that requires single-shot photon number detection.
ACCESSION #
52479448

 

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