Title :
Multi-gigahertz photon counting using InGaAs APDs
Author :
Yuan, Z.L. ; Sharpe, A.W. ; Dynes, J.F. ; Dixon, A.R. ; Shields, A.J.
Author_Institution :
Cambridge Res. Lab., Toshiba Res. Eur. Ltd., Cambridge, UK
Abstract :
We demonstrate multi-gigahertz photon-counting at 1550nm using self-differencing In-GaAs APDs. The quantum efficiency is characterized as 23.5% at an after-pulse probability of 4.84%. The device will further increase the bit-rate for fiber quantum key distribution.
Keywords :
III-V semiconductors; avalanche photodiodes; indium compounds; photon counting; quantum cryptography; APD; InGaAs; fiber quantum key distribution; multi-gigahertz photon counting; quantum efficiency; wavelength 1550 nm; Avalanche photodiodes; Circuit optimization; Delay; Europe; Frequency; Indium gallium arsenide; Photonics; Tunable circuits and devices; Tuned circuits; Voltage;
Conference_Titel :
Lasers and Electro-Optics (CLEO) and Quantum Electronics and Laser Science Conference (QELS), 2010 Conference on
Conference_Location :
San Jose, CA
Print_ISBN :
978-1-55752-890-2
Electronic_ISBN :
978-1-55752-890-2
