Quantum secrete telephone

A technology of quantum security and quantum security communication, which is applied in the field of quantum security telephone, can solve the problems of random jitter of polarization state, difficulty in high-speed data transmission, etc., and achieve good adaptability

Inactive Publication Date: 2010-09-08
SHANGHAI LANGYAN OPTOELECTRONICS TECH
View PDF1 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using FPGA as the control core of the quantum security telephone system solves the problem that the polarization mode dispersion of the polarization encoding method in the prior art will cause ...

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
  • Quantum secrete telephone
  • Quantum secrete telephone
  • Quantum secrete telephone

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] The features of the present invention and other relevant features will be described in further detail below through embodiments in conjunction with the accompanying drawings, so as to facilitate the understanding of those skilled in the art.

[0017] see figure 1 , a quantum security phone of the present invention is characterized in that the optical part of the quantum security communication and the electrical part of the current telephone communication are combined with each other.

[0018] The optical part is composed of an optical sending end and an optical receiving end connected by an optical fiber 9, and the optical sending end includes a semiconductor laser 1, a polarization adjuster 2, a digitally controlled attenuator 3 and a 4*1 (four in and one out) coupler 4 , the output lasers of the four semiconductor lasers 1 are respectively modulated into four states of 0°, 90°, 45°, and 135° by a polarization adjuster 2, and coupled into an optical fiber 9 through a 4...

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 relates to a quantum secrete telephone, which combines the quantum secrete communication with the current telephone communication and realizes secure telephone communication by encrypting/decrypting voice by use of an absolutely secure quantum codebook; the best advantage of the system is: by using FPGA as the control core, as the FPGA does not open the interface of the storage chip of the codebook, any behavior trying to attack a terminal so as to steal the codebook remotely is invalid. Compared with a common computer which has various bugs, the quantum secrete telephone is absolutely powerful guarantee for security. Moreover, along with development of FPGA technology, the current processing speed already reaches GHz level, thus a qualitative leap is made in both the processing speed for key selection and the precision and sensitivity for polarization feedback control; and besides, FPGA is further compatible with other coding schemes such as phase coding and entanglement coding and can work in a quantum key distribution system with higher working frequency with good adaptability.

Description

technical field [0001] The invention relates to quantum secure communication, specifically, a codebook is generated through high-speed quantum secure communication, and then the codebook is used to encrypt and decrypt the compressed voice signal, finally realizing long-distance quantum secure telephone. Background technique [0002] The communication parties of quantum secure communication use single photons to load and transmit information. Since single photons cannot be divided, it is impossible for eavesdroppers to separate and monitor single photons. Therefore, the generated codebook is absolutely safe. [0003] Since quantum secure communication can provide an absolutely secure communication channel, it is of great significance to various fields such as national defense, politics, and finance. Developed countries such as Europe, the United States and Japan are constantly exploring the practical application of quantum secure communication. Switzerland even Using quantum ...

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): H04M1/68H04K1/00H04L9/00
Inventor 陈杰曾和平
Owner SHANGHAI LANGYAN OPTOELECTRONICS TECH
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