We present a robust single-photon quantum secret sharing (QSS) scheme with phase encoding in three-party implementations and a design way of more parties over a 50 km single-mode fiber network using a single QSS protocol. This scheme automatically provides perfect compensation for birefringence. A high visibility of 99.4% is obtained over three hours in visibility and stability measurements without any system adjustments, showing good potential for practical systems. Furthermore, polarization-insensitive phase modulators are realized using this system.
© 2013 Optical Society of America
Original Manuscript: June 3, 2013
Revised Manuscript: September 26, 2013
Manuscript Accepted: September 27, 2013
Published: October 31, 2013
Ma Hai-Qiang, Wei Ke-Jin, and Yang Jian-Hui, "Experimental single qubit quantum secret sharing in a fiber network configuration," Opt. Lett. 38, 4494-4497 (2013)