Experimental circular quantum secret sharing over telecom fiber network.
We present a robust single photon circular quantum secret sharing (QSS) scheme with phase encoding over 50 km single mode fiber network using a circular QSS protocol. Our scheme can automatically provide a perfect compensation of birefringence and remain stable for a long time. A high visibility of 99.3% is obtained. Furthermore, our scheme realizes a polarization insensitive phase modulators. The visibility of this system can be maintained perpetually without any adjustment to the system every time we test the system.
School of Science, Beijing University of Posts and Telecommunications, Beijing 100876, China.
Ke-Jin
KJ
Wei
Hai-Qiang
HQ
Ma
Jian-Hui
JH
Yang
D000465:Algorithms; D003195:Computer Communication Networks / Q000295:instrumentation*; D016494:Computer Security / Q000295:instrumentation*; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005336:Fiber Optic Technology / Q000295:instrumentation*; D011789:Quantum Theory; D012031:Refractometry / Q000295:instrumentation*; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*; D013685:Telecommunications / Q000295:instrumentation*