Communications technology

Research and Development Tend of Quantum Cryptography

Liu Yue-qi

Published Jan 1, 2007• 0 citations

Abstract

This paper analyzes three protocols for quantum key distribution based on single photon,summarizes the research status,and advances the development trend of quantum cryptography on theory and experiment.

Related papers

Developments of free-space quantum key distribution

Zheng Kai

This paper analyzes several protocols for quantum key distribution based on single photon, summarizes the research status on theory and experiment based on photon polarization state and entangled state, illustrate the challenge of the free-space quantum key distribution, and finally advances the problems and future of global quantum communication.

Optical Communication TechnologyJan 1, 20080 citations

Development of Quantum Cryptography

Binyang Zeng

The development history of quantum cryptography is reviewed from the aspects of theory research, experiment progress and technology development, and the research focuses of quantum cryptography are summarized, including quantum key distribution, quantum encryption algorithm, quantum identification, quantum secret sharing, quantum cryptographic analyses, quantum random source and secure direct quantum communication, etc.

Communications technologyJan 1, 20080 citations

One Kind of Safer Cryptographic Technique: Quantum Cryptography

Wang A-chuan, Cao Jun

With the development of computer and communication technology, many people pay close attention to information security technology. Considering that the current encryption has many malpractices, some persons turn attention to quantum cryptography. Quantum Key Distribution is based on the principles of Heisenberg's uncertainty which guarantees that no eavesdropper can escape detection. According to this principle, this paper makes a study of the quantum cryptography technique, discusses the course of quantum key production and distribution in the quantum communication and the principle of quantum key distribution protocol in the communication by combining the application of quantum key protocol in the communication network. Current experimental progress on this aspect is introduced, existing problems are analyzed and some constructive suggestions are proposed. Finally, the developing trend for the theory of quantum password is prospected.

Zhongguo anquan kexue xuebaoJan 1, 20070 citations

Current Status and Future Development of Quantum Cryptographic Protocols

Xue Jun Zhang, Fei Gao, Su‐Juan Qin +1 more

Quantum computing has the capability of parallel computing and is superior to classical computing in solving some specific problems. Once a large-scale quantum computer is developed, the security of classical cryptographic algorithms and protocols, which is based on the assumption of computational complexity, will be severely challenged. Quantum cryptography is a new cryptosystem; its security is based on the principles of quantum mechanics, and can resist the attack of quantum computing. This paper focuses on the nearly 40 years development of quantum cryptographic protocols, including quantum key distribution (QKD), quantum secure direct communication, quantum secret sharing, quantum identity authentication, two-party secure computation, and quantum private query, and summarizes the problems in the process of development. The analysis shows that the quantum cryptographic protocols are in an unbalanced state: QKD is far ahead of other protocols and other protocols are difficult to achieve breakthroughs. In the future, practical quantum protocols for digital signature and two-party secure computation are core issues that needs to be addressed urgently. Therefore, research on quantum and post-quantum cryptography should be conducted synchronously, cross-over study and talent cultivation for the quantum science and cryptography disciplines should be strengthened, and the examination and evaluation mechanism of relevant basic research needs to be optimized.

Strategic Study of CAEJan 1, 20223 citations

Survey of the Development of Quantum Cryptography and Its Applications

Daniel Alvarez, Yoohwan Kim

Discussion on quantum cryptography is largely focused on quantum key distribution. This leads to the terms occasionally being used interchangeably. However, quantum cryptography is a wide field of study encompassing more than just key distribution. This paper surveys many areas of research in quantum cryptography and how they have developed both theoretically and experimentally. This serves as both a summary of the landscape and provides a basis to construct a trajectory of the future in the field. The paper concludes that many of these areas of study suffer similar drawbacks when being realized and that some require more theoretical advancement. In response to these drawbacks, device independent protocols have gained traction in the field.

IEEE Annual Computing and Communication Workshop and Conference (CCWC)Jan 27, 202114 citations

Quantum cryptography and quantum-key distribution with single photons

V. L. Kurochkin, I. I. Ryabtsev, Igor G. Neizvestny

A brief overview of the current status of quantum cryptography is given. The results are presented of our preliminary experiments with free-space quantum-key distribution by means of single linearly polarized photons with coded polarization states according to the BB84 protocol, for which purpose a quantum-cryptography communication system is designed. Single photons are detected with a 50% probability using specially designed high-speed photodetectors based on silicon avalanche photodiodes, operated in Geiger mode with active avalanche quenching. A key generation rate of 3.8 kbit/s is obtained, the mean photon number per pulse being 0.2.

Russian MicroelectronicsJan 1, 20068 citations