Quantum secure direct communication and deterministic secure quantum communication |
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Authors: | Long Gui-lu Deng Fu-guo Wang Chuan Li Xi-han Wen Kai and Wang Wan-ying |
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Institution: | (1) Key Laboratory for Atomic and Molecular Nanosciences and Department of Physics, Tsinghua University, Beijing, 100084, China;(2) Tsinghua National Laboratory for Information Science and Technology, Tsinghua University, Beijing, 100084, China;(3) Key Laboratory of Beam Technology and Material Modification of Ministry of Education, and Institute of Low Energy Nuclear Physics, Beijing Normal University, Beijing, 100875, China |
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Abstract: | In this review article, we review the recent development of quantum secure direct communication (QSDC) and deterministic secure
quantum communication (DSQC) which both are used to transmit secret message, including the criteria for QSDC, some interesting
QSDC protocols, the DSQC protocols and QSDC network, etc. The difference between these two branches of quantum communication
is that DSQC requires the two parties exchange at least one bit of classical information for reading out the message in each
qubit, and QSDC does not. They are attractive because they are deterministic, in particular, the QSDC protocol is fully quantum
mechanical. With sophisticated quantum technology in the future, the QSDC may become more and more popular. For ensuring the
safety of QSDC with single photons and quantum information sharing of single qubit in a noisy channel, a quantum privacy amplification
protocol has been proposed. It involves very simple CHC operations and reduces the information leakage to a negligible small
level. Moreover, with the one-party quantum error correction, a relation has been established between classical linear codes
and quantum one-party codes, hence it is convenient to transfer many good classical error correction codes to the quantum
world. The one-party quantum error correction codes are especially designed for quantum dense coding and related QSDC protocols
based on dense coding.
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Keywords: | quantum secure direct communication deterministic secure quantum communication network quantum privacy amplification one-party quantum error correcting codes |
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