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Quantum secret sharing method and system based on tensor network state dynamic compression

A quantum secret and dynamic compression technology, applied in transmission systems, digital transmission systems, and key distribution, to achieve the effects of improving efficiency and accuracy, reducing size, and obvious storage advantages

Active Publication Date: 2021-02-12
SOUTHWEST UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, existing quantum state secret sharing schemes do not use quantum state compression

Method used

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  • Quantum secret sharing method and system based on tensor network state dynamic compression
  • Quantum secret sharing method and system based on tensor network state dynamic compression
  • Quantum secret sharing method and system based on tensor network state dynamic compression

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Embodiment Construction

[0036] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will be described in detail in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, and are not intended to limit the invention.

[0037] First, we give some basic definitions to facilitate a basic understanding of the concepts involved in subsequent processing, among which:

[0038] The specific definition of matrix product state (MPS) is:

[0039]

[0040] After simplification, the relationship is as follows:

[0041]

[0042] Isometric is defined as:

[0043] if satisfied or called d 1 × d 2 The matrix M is isometric. d 1 and d 2 Indicates the dimension of matrix M, Represents the conjugate conversion rank of matrix M;

[0044] And the definition of local equidistant is:

[0045] S...

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Abstract

The invention discloses a quantum secret sharing method and system based on tensor network state dynamic compression, and the method comprises the following steps: S1, enabling a dispatcher to carry out the local equidistant transformation of quantum state secret information needing to be shared in a mode of a matrix product state, and decomposing the quantum state secret information into corresponding secret shares according to the number of participants; S2, enabling the dispatcher to dispatch the decomposed secret share to the corresponding participant; S3, enabling the participants to share the secret shares obtained by themselves; and S4, acquiring the process information of the local equidistant transformation from the distributor by the participants acquiring all secret shares, andrecovering the shared quantum state secret information in combination with decompression. The method and the system have the advantages that all classic participants and quantum participants can use quantum bits with the quantity index higher than that of the quantum bits received by the participants to decompress the state, the obvious storage advantage is achieved, the quantum communication efficiency and precision are improved, and the size of a quantum memory is greatly reduced.

Description

technical field [0001] The invention relates to quantum communication technology, more specifically, to a quantum secret sharing method and system based on tensor network state dynamic compression. Background technique [0002] It is well known that, for a classical system, the amount of information that can be extracted must be the same as that required to accurately describe the state of the system. For a quantum system, however, this is not the case. The amount of information required to fully describe the state of a qubit is infinite, but no more than 1 bit of information can be extracted by measuring the quantum state. This essential difference between quantum systems and classical systems opens up the possibility of new types of data compression that do not require classical simulations. In quantum mechanics, although all the information contained in an ensemble of systems cannot be compressed into a single quantum copy, exponential storage can be achieved. Worse, f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L9/08
CPCH04L9/085H04L9/0852
Inventor 赖红张强刘紫豪
Owner SOUTHWEST UNIV
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