| Quantum communication is a new interdisciplinary combination of quantum physics and information science. The development of quantum computation and quantum information has brought new challenges and opportunities for the research of information security. Constructing safe and effective quantum secure communication schemes, while exploring the new ways of computing, coding, and information transmission with quantum properties, will effectively address the threat posed by quantum computing to the existing classic cryptography. It will promote the study of quantum theory and make an important contribution for the benefit of all mankind.Keeping up with the hot topics of quantum cryptography, basing on the full study of the principles of quantum mechanics and classic cryptographic, a series quantum secure communication protocols has been designed in this paper. Chinese Remainder Theorem (CRT) has been introduced into quantum information field for the first time. A QSS-SDC scheme (Quantum secret sharing scheme combined with secure direct communication, QSS-SDC) has been proposed. CRT’s secret sharing function, together with high-dimensional superdense coding, provide convenience, security, and large capability quantum channel for secret distribution and recovering. Then, by replacing the maximally entangled Bell states with non-maximally entangled states, the forward scheme has been improved to a new QSS-SDC scheme. Strategy of using random detection particles solves the problem of Correlation-elicitation (CE) attack, ensures the security of the scheme. Finally, after further studing of the quantum secure direct communication scheme based on nonmaximally entanglement pairs, a new quantum anonymous communication scheme with untraceability and high capacity has been proposed.Analysis shows the security and efficiency of the designed schemes. Furthermore, schemes are available in the environment of multi-participant, multi-dimensional channel. |
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