Quantum secret sharing method and quantum communication system based on tensor network
A technology for quantum secrets and secret information, applied in the field of quantum communication systems, can solve problems such as the inability of quantum secret state sharing scheme to achieve dynamic changes, and achieve the effects of high security and reliability, strong scalability, and good application prospects.
Active Publication Date: 2021-05-25
SOUTHWEST UNIV
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[0005] In view of this, the present invention first provides a tensor network-based quantum secret sharing method, which uses the weight of the tensor network to realize the scalability of sharing quantum states, and solves the problem that the quantum secret state sharing scheme cannot realize dynamic changes
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[0026] 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.
[0027] This embodiment first provides a tensor network-based quantum secret sharing method. In order to better understand its inventive concept, a brief introduction to the tensor network state theory and its diversity is given below.
[0028] Tensor networks are used not only in mathematics, but also in physics, chemistry, and machine learning. The basic idea is that an m×n matrix M with real entries can represent a linear mapping from R^n→R^m. Such a map can be pictured as a node with two edges. One edge represents the input space and the other edge represents the output s...
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The invention discloses a quantum secret sharing method and a quantum communication system based on a tensor network. The quantum state is reconstructed by using the corresponding relationship between classical information and quantum information. The sub-secrets are then distributed to participants via classical authentication channels and quantum channels. Finally, the secret reconstruction is realized based on tensor network state theory and (n,n) threshold group recovery protocol. The scalability of secret information, the matrix product representation of quantum multi-body states, scalability, transfer characteristics and non-uniqueness are the biggest innovations of this scheme, which guarantees the safety and reliability of quantum communication and solves the problem that the existing quantum state secret sharing cannot be realized. The question of dynamic construction. The diversity of matrix product state representations and the simple graphical representation that can correspond to tensor networks make this scheme have a good application prospect in the field of quantum state sharing and information security in quantum networks.
Description
technical field [0001] The invention relates to quantum communication technology, more specifically, to a tensor network-based quantum secret sharing method and a quantum communication system. Background technique [0002] In quantum communication systems, the security of existing quantum state secret sharing schemes mostly depends on the transmission protocol, and does not consider extending the initial secret state, so that these quantum state secret sharing schemes cannot realize dynamic functions. If participants join and old participants exit, the initial secret state has to be discarded. [0003] However, since the emergence of quantum computing, people have paid more and more attention to the theory and application of tensor network state. Tensor network state is a state that can be expressed by mathematical graphics, and it is a kind of entangled state. Is it possible to apply the tensor network state algorithm to quantum state secret sharing, so that the non-unique...
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IPC IPC(8): H04L9/08H04L9/32
CPCH04L9/0852H04L9/0858H04L9/3236H04L9/3247
Inventor 赖红张强张宇
Owner SOUTHWEST UNIV