A quantum secret sharing method based on d-level single particles

A quantum secret, single-particle technology, applied in the field of quantum information, can solve problems such as low efficiency and complex quantum operation capabilities, and achieve the effect of reducing the number of particles and high quantum efficiency

Active Publication Date: 2022-03-11
FUJIAN NORMAL UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Considering the difficulty of preparing multi-particle GHZ entangled states under the current technical conditions, people have tried to use two-particle Bell states, single-particle quantum states, etc. to achieve this security task, but these protocols have low efficiency, or require participants to have Disadvantages such as more complex quantum manipulation capabilities

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  • A quantum secret sharing method based on d-level single particles
  • A quantum secret sharing method based on d-level single particles
  • A quantum secret sharing method based on d-level single particles

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Embodiment Construction

[0038] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0039] Such as figure 1 As shown, the present embodiment provides a quantum secret sharing method based on a d-level single particle, comprising the following steps:

[0040] Step S1: Let the secret distributor be R 0 , N participants are R 1 ,...R j ... R N , where R j is the jth participant; the secret distributor R 0 Divide the secret into N equal-length sub-secrets, and randomly distribute the N sub-secrets to N participants, who can collaborate to recover the distributor's secret;

[0041] Step S2: The secret distributor R 0 Provide a series of d-level single-particle strings as information carriers, that is, carrier particles, and embed random messages into carrier particles through local unitary operations on particles, and transmit the coded particle strings to the first participant R j (j=1); after receiving the particle string, the fi...

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Abstract

The invention relates to an efficient and practical quantum secret sharing method based on a d-level single particle. A secret distributor prepares a d-level single particle and uses it as an information carrier for circular transmission between each participant. Each participant encodes its sub-secret into the signal particle through a local unitary operation without quantum storage, which improves the practicability of the scheme. The quantum Fourier transform is used to construct two mutually unbiased ground states on the d-level quantum system, and the quantum unclonability is combined to ensure the unconditional security of the scheme in theory. In the present invention, one d-level particle can share two classical bits, and the number of particles required for wiretapping detection is reduced through a combined wiretapping detection method, so as to ensure that the scheme obtains higher quantum efficiency.

Description

technical field [0001] The invention relates to the technical field of quantum information, in particular to a quantum secret sharing method based on a d-level single particle. Background technique [0002] Secret sharing is an important branch of modern cryptography. It is mainly created to strengthen the confidentiality of keys and reduce the risk of key leakage. It is currently widely used in key management protocols, multi-party secure computing, and electronic auctions. . In a simple three-party secret sharing protocol, a secret owner splits a secret message S into 2 sub-secrets and sends them to two participants respectively. Each participant only knows its own sub-secret and cannot deduce any information about S from it. The secret message S can only be recovered if the two participants collaborate using their sub-secrets. However, since the classical signal can be arbitrarily copied by an attacker without detection, the secret owner cannot ensure that each sub-sec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L9/08
CPCH04L9/0858H04L9/085
Inventor 刘晓芬王开军林崧
Owner FUJIAN NORMAL UNIV
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