中国物理B ›› 2008, Vol. 17 ›› Issue (2): 419-423.doi: 10.1088/1674-1056/17/2/012
杨宇光1, 温巧燕2
Yang Yu-Guang(杨宇光)a)b) and Wen Qiao-Yan(温巧燕)c)
摘要: This paper proposes a circular threshold quantum secret sharing (TQSS) scheme with polarized single photons. A polarized single photon sequence runs circularly among any $t$ or more of $n$ parties and any $t$ or more of $n$ parties can reconstruct the secret key when they collaborate. It shows that entanglement is not necessary for quantum secret sharing. Moreover, the theoretic efficiency is improved to approach 100% as the single photons carrying the secret key are deterministically forwarded among any $t$ or more of $n$ parties, and each photon can carry one bit of information without quantum storage. This protocol is feasible with current technology.
中图分类号: (Quantum cryptography and communication security)