Quantum Byzantine agreement method based on tripartite participation

A Byzantine and agreement technology, applied in the field of quantum Byzantine agreement based on the participation of three parties, can solve the problems of low detection efficiency, high cost of discrete variable quantum state preparation, and difficult realization

Inactive Publication Date: 2020-10-30
CENT SOUTH UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, most of the current quantum solutions to the Byzantine agreement problem are solutions in discrete scenarios, which have low detection efficiency, relatively short communication distances, and the preparation of discrete variable quantum states in the laboratory is expensive and difficult to achieve.

Method used

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  • Quantum Byzantine agreement method based on tripartite participation
  • Quantum Byzantine agreement method based on tripartite participation
  • Quantum Byzantine agreement method based on tripartite participation

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Comparison scheme
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Embodiment Construction

[0036] Such as figure 2 Shown is the method flowchart of the method of the present invention: the quantum Byzantine agreement method based on the participation of three parties provided by the present invention specifically includes the following steps:

[0037] Such as figure 1 As shown, the three participants C (broadcaster), A and B (both receivers) share the three-mode continuous variable quantum unweighted graph state, and the broadcaster sends the information |α c > Sent to receivers A and B, the information received by A and B is |α ac > and |α bc >, and then the two receivers exchange the information they received from the sender, compare and finally confirm the accuracy and authenticity of the sent information:

[0038] Broadcaster C, receivers A and B, share a three-mode continuous variable quantum unweighted graph state, expressed as follows:

[0039]

[0040]

[0041]

[0042] in is the quadrature amplitude component of the i-th mode, e r Indicates...

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Abstract

The invention discloses a quantum Byzantine agreement method based on three-party participation. The method comprises: entangled resources are distributed; a broadcaster C transmits continuous variable quantum state information to receivers A and B; the receivers A and B send respectively received signal information to opposite sides; a Byzantine agreement is determined; if the Byzantine agreementfails to work, the receivers A and B determine original correlation between the receivers A and B to determine the identity of a traitor. According to the invention, entangled resources that are necessary for the Byzantine agreement solution are provided by using the continuous variable quantum graph states. The method has characteristics of high detection efficiency, high repetition rate, greateasiness in lab, and high safety; and the interpretation and representation are realized by using visual graphs.

Description

technical field [0001] The invention belongs to the field of quantum distributed computing, and in particular relates to a quantum Byzantine agreement method based on the participation of three parties. Background technique [0002] In recent years, large-scale and complex distributed systems are developing rapidly. In this case, ensuring high efficiency and high reliability becomes a main theme. In the field of fault-free distributed computing, there has always been an old information-theoretic problem, the famous Byzantine agreement problem, which is a fundamental problem in the field of distributed computing. Now in the era of big data, in the case of discontinuous external updates, how to agree on this change between servers or processors and finally maintain a consistent opinion, so as to ensure the continuity and elegance of data, making this The method research of the problem becomes more urgent. The so-called tripartite Byzantine agreement problem can be described...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/06H04L9/08H04L9/00
CPCH04L9/008H04L9/0852H04L63/123H04L63/1466H04L63/1475
Inventor 郭迎冯艳艳施荣华石金晶
Owner CENT SOUTH UNIV
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