Free-running InGaAs single photon detector with 1 dark count per second at 10% efficiency

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 obtained at a detection efficiency of 10%, with an afterpulse probability of 2.2% for 20 μs of deadtime. This was achieved by using an active hold-off circuit and cooling the NFAD with a free-piston stirling cooler down to temperatures of −110 °C. We integrated two detectors into a practical, 625 MHz clocked quantum key distribution system. Stable, real-time key distribution in the presence of 30 dB channel loss was possible, yielding a secret key rate of 350 bps.

[1]  V. Scarani,et al.  The security of practical quantum key distribution , 2008, 0802.4155.

[2]  Mark A. Itzler,et al.  InGaAs/InP negative feedback avalanche diodes (NFADs) , 2011, Defense + Commercial Sensing.

[3]  A. Dalla Mora,et al.  InGaAs/InP single-photon avalanche diodes show low dark counts and require moderate cooling , 2009, OPTO.

[4]  Sae Woo Nam,et al.  Quantum key distribution over a 40-dB channel loss using superconducting single-photon detectors , 2007, 0706.0397.

[5]  A. Lacaita,et al.  Avalanche photodiodes and quenching circuits for single-photon detection. , 1996, Applied optics.

[6]  J Fan,et al.  Invited review article: Single-photon sources and detectors. , 2011, The Review of scientific instruments.

[7]  V. Scarani,et al.  Fast and simple one-way quantum key distribution , 2005, quant-ph/0506097.

[8]  A. Tosi,et al.  Advances in InGaAsP-based avalanche diode single photon detectors , 2011 .

[9]  F. Marsili,et al.  Detecting single infrared photons with 93% system efficiency , 2012, 1209.5774.

[10]  O. Okunev,et al.  Picosecond superconducting single-photon optical detector , 2001 .

[11]  Alan L. Migdall,et al.  Single-photon detection efficiency up to 50% at 1310 nm with an InGaAs/InP avalanche diode gated at 1.25 GHz , 2013 .

[12]  R. Hadfield.  Single-photon detectors for optical quantum information applications , 2009 .

[13]  Mark A. Itzler,et al.  Free-running single-photon detection based on a negative feedback InGaAs APD , 2012, 1204.4594.

[14]  A. Lacaita,et al.  Trapping phenomena in avalanche photodiodes on nanosecond scale , 1991, IEEE Electron Device Letters.

[15]  Xudong Jiang,et al.  An ultra low noise telecom wavelength free running single photon detector using negative feedback avalanche diode. , 2012, The Review of scientific instruments.

[16]  Nicolas Gisin,et al.  Sine gating detector with simple filtering for low-noise infra-red single photon detection at room temperature , 2012, 1205.3084.

[17]  M. Fejer,et al.  Ultralow noise up-conversion detector and spectrometer for the telecom band. , 2013, Optics express.

[18]  Pascal Junod,et al.  A fast and versatile quantum key distribution system with hardware key distillation and wavelength multiplexing , 2013, 1309.2583.

[19]  Mark A. Itzler,et al.  InP-based negative feedback avalanche diodes , 2009, OPTO.