Multi-party semi-quantum secret sharing method and system based on single photon

A quantum secret, single-photon technology, applied in the field of semi-quantum communication, can solve the problems of reduced practicability, high cost, and more resource consumption, and achieves the effect of reducing demand, resisting internal attacks and external entanglement attacks, and strong practicability

A quantum secret, single-photon technology, applied in the field of semi-quantum communication, can solve the problems of reduced practicability, high cost, and more resource consumption, and achieves the effect of reducing demand, resisting internal attacks and external entanglement attacks, and strong practicability

CN110474770AInactive Publication Date: 2019-11-19CHENGDU UNIV OF INFORMATION TECH
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  • Multi-party semi-quantum secret sharing method and system based on single photon
  • Multi-party semi-quantum secret sharing method and system based on single photon
  • Multi-party semi-quantum secret sharing method and system based on single photon

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Experimental program
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Effect test

Embodiment

[0068] The present invention defines the classic method Bob i Has two operations:

[0069] (1) Use the Z base ({|0>,|1>}) to measure the received particle, and prepare a new particle with the same quantum state and send it to Alice (referred to as MEASURE).

[0070] (2) Return the particles to Alice without interference (referred to as REFLECT).

[0071] In addition, for the sake of simplicity, in the present invention, the measurement basis {|0>,|1>} is recorded as the Z basis, and the measurement basis {|+>,|->} is recorded as the X basis, where The measurements of particles |0> and |1> represent classical bits 0 and 1.

[0072] Such as figure 1 As shown, the multi-party half-quantum secret sharing method based on single photon provided by the embodiment of the present invention includes:

[0073] Step 1: Alice, the secret distributor, prepares a sequence of single photons |S> with a length of M+T, where each single photon |S i > randomly in one of the four quantum sta...

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Abstract

The invention belongs to the technical field of semi-quantum communication, and discloses a multi-party semi-quantum secret sharing method and system based on a single photon. The multi-party semi-quantum secret sharing method comprises the steps that a secret distributor splits a classic information code into quantum states; and the participant receives the quantum state through semi-quantum cryptography communication, then recovers a part of secret information through quantum operation, and recovers original secret information through honesty cooperation. The secret sharing scheme does not depend on entangled-state particles, but adopts single particles, so that the secret sharing scheme has higher practicability in practice; according to the protocol, a classic party does not need to have complete quantum capacity, and the requirement for quantum equipment resources is lowered; according to the multi-party semi-quantum secret sharing method, secret sharing between a secret distributor and multiple parties is completed, but not limited to secret sharing among the three parties; and according to the scheme, internal attacks and external entanglement attacks can be resisted, and safety feasibility is achieved.

Description

technical field [0001] The invention belongs to the technical field of semi-quantum communication, and in particular relates to a multi-party semi-quantum secret sharing method and system based on single photons. Background technique [0002] Currently, the closest prior art: [0003] Semi-quantum cryptography communication is a research branch of quantum communication, which refers to the communication between communicators with complete quantum ability and limited quantum ability. It does not require both communication parties to have complete quantum capabilities, but it improves the security of the communication process through quantum mechanical properties, and at the same time reduces the dependence on quantum device resources. In 2007, Boyer et al. proposed the definition and application ideas of the semi-quantum protocol. Based on the half-quantum idea, they proposed the first half-quantum cryptography protocol based on BB84. Since then, researchers have begun to ...

Claims

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Application Information

Patent Timeline
19 Nov 2019
Publication
CN110474770A
IPC
H04L9/08; H04L9/00; H04B10/70
CPC
H04B10/70; H04L9/002; H04L9/0819; H04L9/085; H04L9/0852; H04L9/0858
Inventors
ๆ˜Œ็‡•; ๆŽ้›ชๆจ