Secure Direct Communication Using Ensembles with the Same Compressed Density Matrix |
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| Authors: | WANG Chuan LI Yan-Song LONG Gui-Lu |
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| Institution: | 1. Department of Physics and Key Laboratory for Quantum Information and Measurements, Tsinghua University, Beijing 100084, China
;2. Key Laboratory for Atomic and Molecular Nanosciences, Tsinghua University, Beijing 100084, China |
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| Abstract: | In this paper, a quantum secure direct communication protocol using ensembles with the same density matrix is proposed. The two communication parties can realize the message transmission using this method through a quantum channel, each bit of information can be transmitted using an ensemble and read out through global measurement. The eavesdropping behavior can be detected through the channel diagnoses. |
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| Keywords: | quantum secure direct communication ensembles with the same density matrix global measurement |
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