Quantum Secret Sharing Protocol between Multiparty and Multiparty with Single Photons and Unitary Transformations
YAN Feng-Li1, GAO Ting2, LI You-Cheng1
1College of Physics Science and Information Engineering, Hebei Normal University, Shijiazhuang 0500162College of Mathematics and Information Science, Hebei Normal University, Shijiazhuang 050016
Quantum Secret Sharing Protocol between Multiparty and Multiparty with Single Photons and Unitary Transformations
YAN Feng-Li1;GAO Ting2;LI You-Cheng1
1College of Physics Science and Information Engineering, Hebei Normal University, Shijiazhuang 0500162College of Mathematics and Information Science, Hebei Normal University, Shijiazhuang 050016
摘要We propose a scheme of quantum secret sharing between Alice's group and Bob's group with single photons and unitary transformations. In the protocol, one member in Alice's group prepares a sequence of single photons in one of four different states, while other members directly encode their information on the sequence of single photons via unitary operations; after that, the last member sends the sequence of single photons to Bob's group. Then Bob's, except for the last one, do work similarly. Finally the last member in Bob's group measures the qubits. If the security of the quantum channel is guaranteed by some tests, then the qubit states sent by the last member of Alice's group can be used as key bits for secret sharing. It is shown that this scheme is safe.
Abstract：We propose a scheme of quantum secret sharing between Alice's group and Bob's group with single photons and unitary transformations. In the protocol, one member in Alice's group prepares a sequence of single photons in one of four different states, while other members directly encode their information on the sequence of single photons via unitary operations; after that, the last member sends the sequence of single photons to Bob's group. Then Bob's, except for the last one, do work similarly. Finally the last member in Bob's group measures the qubits. If the security of the quantum channel is guaranteed by some tests, then the qubit states sent by the last member of Alice's group can be used as key bits for secret sharing. It is shown that this scheme is safe.
YAN Feng-Li;GAO Ting;LI You-Cheng. Quantum Secret Sharing Protocol between Multiparty and Multiparty with Single Photons and Unitary Transformations[J]. 中国物理快报, 2008, 25(4): 1187-1190.
YAN Feng-Li, GAO Ting, LI You-Cheng. Quantum Secret Sharing Protocol between Multiparty and Multiparty with Single Photons and Unitary Transformations. Chin. Phys. Lett., 2008, 25(4): 1187-1190.
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