Three-particle QKD protocol against a collective noise |
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| Authors: | Wei Huang Fen-Zhuo Guo Qiao-Yan Wen |
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| Institution: | a State key Laboratory for Networking and Switching Technology, Beijing University of Posts and Telecommunications, Beijing 100876, Chinab School of Science, Beijing University of Posts and Telecommunications, Beijing, 100876, Chinac National Laboratory for Modern Communications, P.O. Box 810, Chengdu, 610041, China |
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| Abstract: | The research on decoherence-free subspace has both theoretical and practical significance. DFS is a subspace of quantum system states which is robust against a specific form of decoherence. The method of constructing DFS based algebra, which is different from the way based on the special Bell states, is introduced. Then a three-particle QKD protocol against collective-bit flipping noise is presented according to this method. Finally, we make a security analysis of our protocol. |
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| Keywords: | Quantum key distribution Decoherence-free subspace Quantum error avoiding code Kraus operators |
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