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Eavesdropping demonstration device and method based on quantum key communication

A quantum key and demonstration device technology, which is applied in the field of eavesdropping demonstration devices based on quantum key communication, can solve problems such as inability to demonstrate the security of quantum communication intuitively, and inability to demonstrate eavesdropping intuitively, achieving intuitive security and simple methods intuitive effect

Active Publication Date: 2016-01-13
ANHUI QASKY QUANTUM SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the existing technology, it is generally impossible to intuitively demonstrate the security of quantum communication, and it is also impossible to intuitively demonstrate the process of eavesdropping

Method used

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  • Eavesdropping demonstration device and method based on quantum key communication
  • Eavesdropping demonstration device and method based on quantum key communication

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] see figure 1 , the eavesdropping demonstration device based on quantum key communication, including an optical switch OS for switching working modes, a first optical beam splitter BS1 for combining or splitting light, and a first optical beam splitter BS1 for combining or splitting light The branched second optical beam splitter BS2, a synchronous detector for simulating eavesdropper's eavesdropping information; the optical switch OS includes an optical input terminal 1, a first optical output terminal 2 and a second optical output terminal 3; the The first beam splitter BS1 includes a first light entrance 4, a second light entrance 5 and a light output 6; the second beam splitter BS2 includes a light entrance 7, a first light exit 8 and a second light exit port 9; the first light output port 2 is connected to the first light port 4, the second light output port 3 is connected to the light port 7, the first light port 8 is connected to the second light port 5, and the s...

Embodiment 2

[0032] This eavesdropping demonstration method based on quantum key communication comprises the following steps:

[0033] Step 1, input the light beam into the optical switch from the optical input end, and set the optical switch to normal mode, so that the light beam passes through the optical switch and the first optical beam splitter in sequence, and then emits from the optical output end;

[0034]Step 2: Set the optical switch to eavesdropping mode, so that the light beam is transmitted to the second optical beam splitter after passing through the optical switch, and the second optical beam splitter divides the light beam into two signals, one of which passes through the first optical beam splitter, From the optical output end to the receiving end, another signal enters the synchronous detector; when the synchronous detector detects the optical signal, the indicator light on the synchronous detector lights up.

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Abstract

The invention discloses a wiretap demonstration device based on quantum key communication. The wiretap demonstration device comprises an optical switch OS, a first beam splitter BS1, a second beam splitter BS2 and a synchronous detector. The optical switch OS comprises a light input end, a first light output end and a second light output end. The first beam splitter BS1 comprises a first light inlet end, a second light inlet end and a light output end. The second beam splitter BS2 comprises a light inlet, a first light outlet and a second light outlet. The first light output end is connected with the first light inlet end, the second light output end is connected with the light inlet, the first light outlet is connected with the second light inlet end and the second light outlet is connected with the synchronous detector. The invention further discloses a wiretap demonstration method based on quantum key communication. The wiretap demonstration device and method based on quantum key communication can very visually display the safety of quantum communication information transmission, and the method is simple, visual, economical and practical.

Description

technical field [0001] The invention relates to an eavesdropping demonstration device and method used in quantum key communication, in particular to an eavesdropping demonstration device and method based on quantum key communication. Background technique [0002] Quantum key communication is based on the three laws of quantum science: measurement collapse theory, quantum non-cloning theory, and uncertainty principle. Based on the above three theories, the security and reliability of information transmitted by quantum key communication is better than that of classical communication. However, in the prior art, it is generally impossible to intuitively demonstrate the security of quantum communication, and it is also impossible to intuitively demonstrate the process of eavesdropping. Contents of the invention [0003] The technical problem solved by the present invention is to provide an eavesdropping demonstration device based on quantum key communication for the above-ment...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09B19/00
Inventor 徐生福方子刘云苗春花韩正甫赵义博
Owner ANHUI QASKY QUANTUM SCI & TECH CO LTD
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