Active polarization stabilization in optical fibers suitable for quantum key distribution.
Polarization feedback control of single-photon pulses has been achieved in long-distance fibers for more than 10 hours, which facilitated "one-way" polarization-encoded quantum key distribution with long-term stabilities. Experimental test of polarization encoding in 75 km fibers demonstrated that the single-photon polarization transformation in long-distance fibers could be controlled to provide a typical QBER of (3.9+/-1.5)% within a long-term operation of 620 minutes.
Chen
Jie
J
State Key Laboratory of Precision Spectroscopy, Department of Physics, East China Normal University, Shanghai 200062, People's Republic of China.
Wu
Guang
G
Li
Yao
Y
Wu
E
E
Zeng
Heping
H
D016494:Computer Security; D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D055100:Optical Fibers; D011789:Quantum Theory; D012031:Refractometry / Q000295:instrumentation*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*