Microwave single quantum detector based on microwave optical modulator

A microwave optics and single-quantum technology, which is applied in the direction of instruments, measuring devices, and measuring electrical variables, etc., can solve the problems of complex processing, difficult realization, and high cost, and achieve the effect of simple method and good practicability

Pending Publication Date: 2019-03-26
CHINA ELECTRONICS TECH GRP NO 39 RES INST +1
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

The detector works at an extremely low temperature of 10mK. The construction of an extremely low temperature working environment requires special equipment using dilution refrigeration technology, which is complicated and expensive.
At the same time, the manufacturing process of Josephson junction is complex and difficult to realize.
[0006] The second implementation method in the prior art, that is, the microwave single quantum indirect detection method realized by coupling the microwave single quantum with the optical single photon through the micro-nano structure, the biggest disadvantage is also the 10mK extremely low temperature environment where the microwave device is placed, and the technology is complicated. Expensive
At the same time, the mechanical cavity conversion mechanism is a micro-nano structure, the processing process is complicated, and the process is difficult to realize

Method used

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  • Microwave single quantum detector based on microwave optical modulator
  • Microwave single quantum detector based on microwave optical modulator
  • Microwave single quantum detector based on microwave optical modulator

Examples

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Embodiment 1

[0033] This embodiment is a dual-channel output microwave single quantum detector, consisting of a microwave signal input device (1), a high-performance low-noise amplifier (2), a microwave filter (3), a laser (6), and a microwave photon converter (4). ), an optical filter (5), a photon controllable attenuator (7), a photon beam splitter (8), a photon variable delayer (9) and a single photon detector (10).

[0034] The microwave signal input device (1) is used for inputting the received signal of the quantum radar, the input signal of the signal source and / or the input signal of the noise source.

[0035] The high-performance low-noise amplifier (2) controls the deterioration of the signal-to-noise ratio introduced by subsequent signal conversion and processing processes within a range of less than 0.1dB.

[0036] The microwave filter (3) filters the amplified microwave signal to filter out signal out-of-band noise and spurs.

[0037] The microwave signal filtered by the micr...

Embodiment 2

[0045] This embodiment is a single channel output microwave single quantum detector, consisting of a microwave signal input device (1), a high performance low noise amplifier (2), a microwave filter (3), a microwave photon converter (4), a laser (6) ), an optical filter (5), a photon controllable attenuator (7), and a single photon detector (10).

[0046] The microwave signal input device (1) is used for inputting the received signal of the quantum radar, the input signal of the signal source or the input signal of the noise source.

[0047] The high-performance low-noise amplifier (2) controls the signal-to-noise ratio degradation introduced by the subsequent signal conversion and processing process within the range of less than 0.1dB.

[0048] The microwave filter (3) filters the amplified microwave signal to filter out signal out-of-band noise and spurs; the microwave signal filtered by the microwave filter (3) and the laser signal generated by the laser (6) are input into ...

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Abstract

The invention provides a microwave single quantum detector based on a microwave optical modulator. The microwave single quantum detector comprises a microwave signal input device, a low-noise amplifier, a microwave filter, a laser, a microwave photon converter, an optical filter, a photon controllable attenuator and a single photon detector. Based on the microwave optical modulator, a microwave signal is up-converted into an optical signal, and microwave single quantum detection is realized. The microwave single quantum detector based on the microwave optical modulator has the advantages thatmicrowave signals are input to the microwave signal input device, and the microwave signals are subjected to amplification and filtering, electro-optical conversion and photon filtering and enter thephoton detector to obtain single photon signals which are used for rear-end signal processing and the electromagnetic characteristics of the input microwave signals are analyzed. The method has the characteristics of high detection efficiency, high counting rate and low dark counting rate; all devices work at room temperature, special refrigeration equipment is not needed, a micro-nano mechanism with high machining process difficulty is not needed, and the method is convenient to implement.

Description

technical field [0001] The invention belongs to the field of microwave quantum precision measurement and quantum radar, in particular to a microwave single quantum detector based on a microwave optical modulator. Background technique [0002] Microwave single quantum detection is an urgently needed key technology in the field of quantum precision measurement. There are already available technologies in the world, including direct microwave single quantum detection and indirect microwave single quantum detection. [0003] Direct microwave quantum detection uses the response of a Josephson junction to a single microwave quantum under extremely low temperature conditions to realize microwave single quantum detection. The working temperature of the detector is extremely low temperature of 10mK, and the Josephson junction is realized by micron structure processing technology. This method can directly detect microwave single quantum, which is one of the competitive implementation...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R29/08
CPCG01R29/0871G01R29/0885
Inventor 吴养曹李桂红尤立星赵军民章利球严会玲李浩穆继芒蒋燕阳王平白亚军段可欣
Owner CHINA ELECTRONICS TECH GRP NO 39 RES INST
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