Table 1 In-lab QKD system and security parameters
From: High-rate intercity quantum key distribution with a semiconductor single-photon source
Description | Parameter | Value |
|---|---|---|
Average photon number per pulse | \(\left\langle n\right\rangle\) | 0.138 |
Clock rate | R | 228 MHz |
Second-order correlation | g(2)(0) | 2.43% |
Transmitter efficiency | ηT | 0.464 |
Receiver efficiency | ηR | 0.740 |
System misalignment probability | pmis | 2.57 × 10−4 |
Detector efficiency | ηD | 0.740 |
Dark count probability | pdc | 8.74 × 10−7 |
Dead time | τdt | 35.865 ns |
Averaged fibre-spool loss | l | 0.1956 dB km−1 |
Field-installed fibre loss | L | 25.49 dB |
Parameter estimation failure probability | ϵPE | \({2\times 1{0}^{-10}\atop}{/}_{3}\) |
Error correction failure probability | ϵEC | \({1{0}^{-10}\atop}{/}_{6}\) |
Privacy amplification failure probability | ϵPA | \({1{0}^{-10}\atop}{/}_{6}\) |
Error verification failure probability | ϵcor | 10−15 |
Error correction leakage | fEC | 1.16 |
λEC | SIa |
