Quantum radar based on quantum correlation and processing method thereof

Abstract

The present invention provides a Quantum radar based on the quantum correlation. The problem is fundamentally solved that radar pulse is captured by a target or a third party and the detection is disturbed through correspondingly sending error signals when the radar is detected. The quantum radar comprises a detection signal generation device and an echo signal processing device. The detection signal generation device comprises a signal device and a control device. The echo signal processing device comprises a monitoring device, a beam splitting device and an imaging device. The signal device comprises a laser light source and an intensity modulator. The monitoring device comprises an unequal arm interferometer and a photon counter. When two continuously strong pulses access the monitoring device, the photon counter has the count, and it is determined that the detection signals are captured and the echo signals have interference signals. The whole stability is improved. The device is simplified to allow the implementation and the operation to be simplified. The quantum radar based on the quantum correlation and the processing method thereof only need to compare with the count condition of the photon counter to determine whether there is interference or not, the determination mode is simple and the error rate is reduced.

Description

technical field [0001] The invention belongs to the field of quantum detection and quantum information, in particular to a quantum radar based on quantum correlation and a processing method thereof. Background technique [0002] With the development of Internet technology, various security issues emerge in an endless stream, which makes information security a huge challenge facing the world today. As an interdisciplinary subject of physics and informatics, quantum information has developed rapidly in the past decade and has received great attention from various countries. As a key research direction in the field of quantum information, quantum key distribution will fundamentally solve the problem of information security. Through the one-time pad method, the quantum key distribution mechanism can enable two or more parties to share secure keys in various environments where eavesdropping exists. Its basic principle is based on the basic laws of quantum mechanics, so it is com...

AI Technical Summary

Problems solved by technology

[0019] 1. Existing literature studies have shown that the polarization of light will change significantly after being scattered by an object (non-mirror surface), which will cause a very large error rate in the original scheme without any interference

Therefore, this scheme is not feasible to detect actual objects

[0020] 2. Due to the use of weak pulses, its detection distance is extremely limited

At the same time, the corresponding echo signal will be weaker, requiring a very fine imaging device, which increases the cost and reduces the reliability of the device

[0021] 3. It adopts electromechanical device encoding, and the encoding rate will be very low

At the same time, the reliability of the electromechanical device for long-term use is also a problem

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