Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Two-degree-of-freedom-based three-party quantum secure direct communication method irrelevant to the measurement equipment

A technology for secure direct communication and measurement equipment, applied in the field of tripartite quantum secure direct communication and quantum secure direct communication, it can solve problems such as imperfect detector equipment and measurement end attacks, and achieve the elimination of security loopholes, high flexibility, and improved channel performance. The effect of capacity

Active Publication Date: 2021-11-30
NANJING UNIV OF POSTS & TELECOMM
View PDF3 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Second, due to the imperfection of detector equipment, there may be attacks on the measurement side

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Two-degree-of-freedom-based three-party quantum secure direct communication method irrelevant to the measurement equipment
  • Two-degree-of-freedom-based three-party quantum secure direct communication method irrelevant to the measurement equipment
  • Two-degree-of-freedom-based three-party quantum secure direct communication method irrelevant to the measurement equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0051] The technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0052] like figure 1 As shown, the present invention provides a three-party quantum-safe direct communication method independent of measuring equipment based on two-degree-of-freedom encoded super-entangled states, comprising the following steps:

[0053] Step 1: Alice and Bob each prepare N 1 The same polarization-space two-degree-of-freedom super-entangled photon pair One photon is then taken from each hyperentangled photon pair, forming photon sequences 1 and 3, respectively. The remaining one photon in the two super-entangled photon pairs constitutes photon sequences 2 and 4, respectively. In addition, Alice and Bob also need to prepare m 1 pieces (m 1 1 , but also large enough) a single photon, encoded in its polarization degree of freedom and space degree of freedom, for Alice, a single photon may be in one of the followi...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

According to the two-degree-of-freedom-based three-party quantum secure direct communication method irrelevant to the measurement equipment, coding communication is carried out by virtue of two degrees of freedom of photons, so that the channel capacity is doubled; due to the fact that the two degrees of freedom of the hyper-entangled state are completely independent, codes on the two degrees of freedom do not affect each other, detection or transmission errors on one degree of freedom do not affect the second degree of freedom, and therefore the method is more flexible and has higher anti-error capacity compared with a scheme of coding on one degree of freedom. According to the method, all detection devices are placed on the fourth party, all security holes from the detection end are blocked, and all attacks on the detector end can be completely resisted; the method has a wide application prospect in the field of quantum communication in the future.

Description

technical field [0001] The invention belongs to the technical field of quantum communication, relates to a quantum safe direct communication technology, in particular to a three-party quantum safe direct communication method based on two degrees of freedom independent of measuring equipment. Background technique [0002] Quantum Secure Direct Communication (QSDC) is a very important branch of quantum secure communication. QSDC can directly transmit secure information between the two parties in communication, without the need to share keys in advance between the two parties in communication. In 2000, Long Guilu and others proposed the basic idea of ​​QSDC for the first time. In 2003, based on the idea of ​​quantum dense coding, Deng Fuguo et al. proposed a two-step QSDC protocol and explained the QSDC standard in detail. In 2004, Deng Fuguo and others proposed the QSDC protocol based on single photon. After that, QSDC has made great progress in theory, and various QSDC pro...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H04L9/08H04B10/70
CPCH04L9/0858H04B10/70
Inventor 盛宇波洪一飘周澜钟伟
Owner NANJING UNIV OF POSTS & TELECOMM
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com