| 摘要 |
A method of autocalibrating the timing of a laser (202) in a quantum key distribution (QKD) system (200) is disclosed. Laser (202) generates photon signals (204) in response to a laser gating signal (SO) from a controller (248). The method includes first performing a laser gate scan (304) to establish the optimum arrival time (TMIN) of the laser gating signal corresponding to an optimum (e.g., minimum) bit- error rate BER (e.g., BERMIN) when exchanging photon signals between encoding stations (Alice and Bob) of the QKD system. Once the optimum laser gating signal arrival time (TMIN) is determined, the laser gate scan is terminated (306) and a laser gate dither process (308) is initiated to ensure that the system operates at or near the optimum BER. |
