A dual-field quantum key distribution method and system that is secure to actual signal sources

A quantum key distribution and signal source technology, applied in the field of quantum key distribution, can solve the problems of low security and low coding rate, and achieve the effects of improving transmission distance, high coding rate and simple equipment.

Active Publication Date: 2022-07-12
NANJING UNIV
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Purpose of the invention: The purpose of the present invention is to provide a double-field quantum key distribution method and system that is safe to the actual signal source, which solves the problem of excessive coding rate existing in the existing quantum key distribution protocol under actual equipment conditions. low or low security issues

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
  • A dual-field quantum key distribution method and system that is secure to actual signal sources
  • A dual-field quantum key distribution method and system that is secure to actual signal sources
  • A dual-field quantum key distribution method and system that is secure to actual signal sources

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0045] Below in conjunction with accompanying drawing and embodiment, the present invention is further described:

[0046] like Figure 1 to Figure 3 As shown, the present invention proposes a dual-field quantum key distribution method that is secure to the actual signal source, including the following steps:

[0047] (1) The first sending end and the second sending end respectively prepare weakly coherent optical pulses as signal states, and perform coded phase modulation on the respectively prepared signal states, while the first sending end and the second sending end record the phase modulation. coding information and base vector information;

[0048] The specific process of coding phase modulation is as follows: the selection of phase modulation is , there is a choice of fundamental vectors in this method, where the phase modulation Defined as the X fundamental vector, the phase modulation Defined as the Y basis vector, the first sender and the second sender respect...

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

The invention discloses a double-field quantum key distribution method and system that is safe for an actual signal source, wherein the quantum key distribution only needs to use weakly coherent light pulses, and at the same time, the intermediate measurement device only needs to perform an interference operation. In the process, the present invention adopts the basic structure of measurement device-independent quantum key distribution, and uses a unique protocol implementation process to characterize the existing actual loopholes of the sender, which can meet the requirements of actual security, and does not need to be performed on the transmission channel. monitor. Based on the above advantages, the distance of key transmission is increased, and a high coding rate can still be obtained in the case of long-distance transmission of quantum keys; at the same time, based on the above advantages, this scheme has extremely high adaptability to actual operations with strong practicality.

Description

technical field [0001] The invention relates to the technical field of quantum key distribution, in particular to a dual-field quantum key distribution method and system that is secure to an actual signal source. Background technique [0002] Based on the basic principles of quantum mechanics, quantum key distribution can provide absolutely secure communication between the two parties, and solve the security loophole that classical key distribution is easy to crack based on computational complexity. Today, quantum key distribution has made extensive research progress in both theory and experiment. Some quantum key distribution protocols have already entered the practical field. Although quantum key distribution has achieved some tentative results in the field of practicality, there are still larger loopholes in its distance from real practicality that have not been taken into account. The most important of these is the gap between the actual transmission measurement equipm...

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
Patent Type & Authority Patents(China)
IPC IPC(8): H04L9/08H04B10/70
Inventor 尹华磊顾杰陈增兵
Owner NANJING UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap