Semi-quantum secure direct communication method and system based on Bell state

A technology of secure direct communication and quantum square, which is applied in the field of semi-quantum secure direct communication method and system based on Bell state, can solve the problems of low particle utilization efficiency and transmission efficiency, and achieve the effect of solving the unbalanced quantum operation ability

Active Publication Date: 2019-07-26
江苏金盾检测技术股份有限公司
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Problems solved by technology

[0012] How to solve the problem of low particle utilization efficiency and transmission efficiency

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  • Semi-quantum secure direct communication method and system based on Bell state
  • Semi-quantum secure direct communication method and system based on Bell state
  • Semi-quantum secure direct communication method and system based on Bell state

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Embodiment Construction

[0042] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0043] In the existing technologies, most of the communication parties are required to have strong quantum manipulation capabilities, such as quantum preparation, Bell measurement, etc. Due to the limitation of cost and quantum resources, in a quantum communication network, it is difficult for ordinary users, who account for the vast majority, to have such expensive quantum capabilities. This objective fact seriously hinders the commercialization and popularization of quantum communication.

[0044] Most of the existing quantum communication protocols are based on the principle of quantum teleportation. However, quantum t...

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Abstract

The invention belongs to the technical field of network communication, and discloses a semi-quantum secure direct communication method and system based on a Bell state, and the method comprises the steps: a strong quantum party randomly selecting from four sets of Bell states and preparing Bell state particles, and a semi-quantum party randomly selecting measurement or reflection operation on eachparticle after receiving a sequence sent by the strong quantum party; the strong quantum party temporarily storing the particle sequence reflected by the semi-quantum party through quantum memory equipment, and informing the strong quantum party that the particles reflected by the semi-quantum party are completely received through a classical channel; and the strong quantum party measuring the remaining sequence particles to obtain a measurement result. By using the protocol provided by the invention, secret information can be directly transmitted to a common user with weak quantum capacity under relatively good efficiency transmission, so that quantum secure direct communication is completed. Based on the semi-quantum theory, the protocol can be applied to a quantum communication networkcloser to reality.

Description

technical field [0001] The invention belongs to the technical field of network communication, and in particular relates to a Bell state-based semi-quantum secure direct communication method and system. Background technique [0002] At present, the existing technologies commonly used in the industry are as follows: [0003] In the quantum communication network, the current technological development in the industry is as follows: In the past thirty years, with the rapid development of computer technology, the emergence of quantum computers will make the cryptographic system based on the traditional mathematical calculation complexity change. It's no longer safe. People need various more secure and efficient communication and encryption protocols. In 1984, Bennett and Brassard proposed the first quantum cryptography protocol, that is, the BB84 protocol. Researchers have developed a large number of quantum cryptography protocols and quantum communication protocols, including q...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B10/70H04L9/08H04L29/06
CPCH04B10/70H04L9/0852H04L63/0236
Inventor 张仕斌郑涛昌燕
Owner 江苏金盾检测技术股份有限公司
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