Full optical fiber communication system and method of QKD system

A technology of quantum key distribution and all-fiber communication, which is applied in the field of communication systems, can solve the problems such as the inability to spread the commercialization of QKD equipment, and achieve the effect of improving security.

Inactive Publication Date: 2014-06-04
ANHUI QASKY QUANTUM SCI & TECH CO LTD
View PDF8 Cites 31 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This security hole will be fatal, and it will prevent the commercialization of QKD equipment

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
  • Full optical fiber communication system and method of QKD system
  • Full optical fiber communication system and method of QKD system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] see figure 2 , the all-fiber communication system of this quantum key distribution system includes a transmitting end and a receiving end, and the transmitting end includes a transmitting end FPGA, a quantum optical laser Laser1, a synchronous optical and classical signal multiplexing laser Laser2, an operating system at the transmitting end, and a transmitting end A quantum signal modulation system at the end, a wavelength division multiplexer DWDM at the sending end; the receiving end includes an FPGA at the receiving end, a single photon detector SPD, a synchronous photodetector, a quantum signal demodulation system at the receiving end, and a wavelength division multiplexer at the receiving end DWDM, receiving end operating system; the optical frequencies transmitted by the quantum optical laser Laser1 and the synchronous optical and classical signal multiplexing laser Laser2 are not the same; the quantum optical laser Laser1, synchronous optical and classical signa...

Embodiment 2

[0032] see figure 2 , the all-fiber communication method of the quantum key distribution system, comprising the following steps:

[0033] Step 1. The sending end sends the quantum key signal to the quantum signal modulation system at the sending end through the quantum optical laser Laser1; in addition, the synchronous optical and classical signal multiplexing laser Laser2 is used to send the synchronous optical signal and key agreement in a time-division multiplexed manner The signal is sent to the wavelength division multiplexer DWDM at the sending end; the optical frequencies transmitted by the quantum optical laser Laser1 and the synchronous light and the classical signal multiplexing laser Laser2 are different; the wavelength division multiplexer DWDM at the sending end combines the quantum optical laser Laser1 and the synchronous optical The light of the two lasers, the classical signal multiplexing laser Laser2, is loaded into an optical fiber and sent to the w...

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 full optical fiber communication system of a QKD system. The full optical fiber communication system comprises a sending end and a receiving end, the sending end comprises a sending end FPGA, a quantum light laser (1), a synchronization light and classic signal multiplexing laser (2), a sending end operation system, a sending end quantum signal modulating system and a sending end DWDM, and the receiving end comprises a receiving end FPGA, an SPD, a synchronization light detector, a receiving end quantum signal demodulating system, a receiving end DWDM and a receiving end operation system. The invention further discloses a full optical fiber communication method of the QKD system. By means of the full optical fiber communication system and method, the time division multiplex mode is adopted for sending three signals in one optical fiber, reticle connection is eliminated, key negotiation signals and synchronous data are sent through synchronization light laser synchronization time division multiplexing, dependences of QKD on classic Ethernet communication are eliminated, and the safety of the QKD system is greatly improved.

Description

[0001] technical field [0002] The invention relates to a communication system and method between QKD devices of a quantum key distribution system, in particular to an all-fiber communication system and method of the quantum key distribution system. Background technique [0003] With the progress of commercialization of QKD, the safety and stability of QKD system has attracted more and more attention from the industry. We know that the security of quantum keys is based on three basic laws of physics: measurement collapse theory, Heisenberg uncertainty principle, and quantum non-cloning law. Therefore, the quantum key is considered to be absolutely safe, and the core value of the quantum key lies in its absolute security. [0004] However, the actual QKD equipment has great security risks. The processing and storage of the core data in the current QKD equipment are all carried out on the internal operating system platform, and the key negotiation signals transmitted by the...

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 Applications(China)
IPC IPC(8): H04J14/02H04B10/25H04L9/00
Inventor 郭俊福蒋金凤韩正甫赵义博
Owner ANHUI QASKY QUANTUM SCI & TECH CO LTD
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