.Quantum signature scheme with single photons[J].Optoelectronics Letters,2006,2(3):209-212 Quantum signature scheme with single photons WANG Jian ZHANG Quan TANG Chao-jing School of Electronic Science and Engineering, National University of Defense Technology, Changsha 410073, China Abstract:       Quantum digital signature is the quantum scenario of classical digital signature. It makes use of quantum effects to provide unconditionally secure signature. We first present a prototype of quantum signature scheme using single photons and then discuss its extensions. The most important property of the proposed scheme is that it is not necessary for the scheme to use entangled states. The security of the scheme is based on quantum key distribution and quantum one-time pad proved as unconditionally secure. The present scheme is efficient in that it needs only single photons and von Neumann measurement. We also show a quantum circuit for the scheme. Hits: 3597 Download times: 174 View Full Text    Download reader