Room temperature single-photon detectors for high bit rate quantum key   distribution
  We report room temperature operation of telecom wavelength single-photon detectors for high bit rate quantum key distribution (QKD). Room temperature operation is achieved using InGaAs avalanche photodiodes integrated with electronics based on the self-differencing technique that increases avalanche discrimination sensitivity. Despite using room temperature detectors, we demonstrate QKD with record secure bit rates over a range of fiber lengths (e.g. 1.26 Mbit/s over 50 km). Furthermore, our results indicate that operating the detectors at room temperature increases the secure bit rate for short distances. 
L. C. Comandar, B. Fr\"ohlich, M. Lucamarini, K. A. Patel, A. W.   Sharpe, J. F. Dynes, Z. L. Yuan, R. V. Penty and A. J. Sh...
quant-ph