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A semi-quantum secure direct communication method and system based on Bell states

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: 2020-12-22
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

Method used

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  • A semi-quantum secure direct communication method and system based on Bell states
  • A semi-quantum secure direct communication method and system based on Bell states
  • A semi-quantum secure direct communication method and system based on Bell states

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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 Bell states. The strong quantum party randomly selects from four groups of Bell states to prepare Bell state particles, and receives the sequence sent by the strong quantum party. , the half-quantum party randomly selects the measurement or reflection operation for each particle; the strong quantum party temporarily stores the particle sequence reflected by the half-quantum party through the quantum memory device, and the strong quantum party informs the half-quantum party through the classical channel that the reception of the reflected particles is completed ; The strong quantum square measures the remaining sequence particles, and obtains the measurement results. The present invention can use this protocol to directly transmit secret information to ordinary users with weak quantum capabilities under better transmission efficiency, and complete quantum secure direct communication; the theory based on half-quantum shows that this protocol can be applied to more practical quantum in the communication network.

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 Patents(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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