We present a free-running single photon detector for telecom wavelengths based on a
negative feedback avalanche photodiode (NFAD). A dark count rate as low as 1 cps was …

We report a telecom-band single-photon detector for gigahertz clocked quantum key
distribution systems. The single-photon detector is based on a sinusoidally gated …

We present and analyze a gated single photon avalanche detector using a sine gating
scheme with a simple but effective low-pass filtering technique for fast low-noise single …

We report a 2 GHz operation of InGaAs avalanche photodiodes for efficient single photon
detection at telecom wavelengths. Employing a self-differencing circuit that incorporates …

A brief overview is given of single photon detector performance requirements for quantum
cryptography applications. The analysis is made with respect to restrictions necessary to …

A commercial avalanche photodiode (APD) and the circuitry needed to operate it as a single-
photon detector (SPD) have been integrated onto a single PC board (PCB). At temperatures …

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 …

We have investigated the performance of an InGaAs/InP avalanche photodiode for photon
counting at 1550 nm in the temperature range of thermoelectric cooling. A quantum …

An efficient and low-noise 1.244-GHz gating InGaAs single-photon avalanche photodiode
(SAPD) was developed for a high-speed quantum key distribution (QKD) system. An …

We demonstrate an efficient way to improve the timing jitter of sine-wave gated InGaAs/InP
avalanche photo diode (APD) by combining sinusoidally balanced differencing and low …