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Single Microwave Quantum Amplifier Based on Very Narrow Band Filtering and Back-pass Effect

A filter and amplifier technology, which is applied in the field of single microwave quantum amplifiers, can solve problems such as the inability to realize single microwave quantum amplification, and achieve the effects of convenient implementation, stable performance, and mature technology

Active Publication Date: 2022-08-09
CHINA ELECTRONICS TECH GRP NO 39 RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The current microwave low-noise linear amplifiers are all small-signal amplifiers (can only be amplified when thousands of microwave quanta are input), and cannot realize the amplification of a single microwave quantum

Method used

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  • Single Microwave Quantum Amplifier Based on Very Narrow Band Filtering and Back-pass Effect
  • Single Microwave Quantum Amplifier Based on Very Narrow Band Filtering and Back-pass Effect
  • Single Microwave Quantum Amplifier Based on Very Narrow Band Filtering and Back-pass Effect

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Experimental program
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Effect test

Embodiment 1

[0057] like figure 2 As shown, the single microwave quantum output from a single microwave quantum source (output a single microwave quantum per microsecond) and the thermal noise microwave quantum output from a broadband microwave noise source (a broadband 1GHz microwave noise source) (input about 1000 single microwave quantum per microsecond) The microwave quantum) is output to the microwave low-noise linear amplifier together to form a strong power input; the broadband microwave noise source and the single microwave quantum source do not share the same source. The microwave low-noise linear amplifier amplifies the mixed signal by 50dB; the amplified signal passes through the microwave isolator, which prevents the reflection of the first-pole narrow-band microwave filter from affecting the performance of the microwave low-noise linear amplifier, and absorbs the reflected signal from the filter ; The first extremely narrow-band microwave filter only allows the microwave extr...

Embodiment 2

[0059] like image 3 As shown, under normal temperature conditions, the single microwave quantum (outputting a single microwave quantum per microsecond) and thermal noise microwave quantum (outputting about 1000 single microwaves per microsecond) output by a single microwave quantum source and a broadband noise source co-source device Quantum) are input into the microwave low-noise linear amplifier together to form a strong power input, and the microwave low-noise linear amplifier amplifies the mixed signal by 60dB; the amplified signal passes through the microwave isolator, which prevents the first extremely narrow-band microwave The effect of filter reflection on the performance of the microwave low-noise linear amplifier is to absorb the reflected signal of the first-pole narrow-band microwave filter; the first-pole narrow-band microwave filter only allows the signal in the microwave extremely narrow-band passband to pass (5kHz passband bandwidth), and the filter All freque...

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Abstract

The invention proposes a single microwave quantum amplifier based on extremely narrowband filtering and back-pass effect, including a single microwave quantum source, a broadband microwave noise source, a microwave low noise linear amplifier, a microwave isolator and a first-pole narrowband microwave filter; a single microwave The single microwave quantum output from the quantum source and the thermal noise output from the broadband microwave noise source are mixed and input into the microwave low-noise linear amplifier; the microwave low-noise linear amplifier amplifies the input mixed signal; after the amplified signal passes through the microwave isolator, the input To the first-pole narrow-band microwave filter, the amplification of single microwave quantum is realized; the bandwidth of the first-pole narrow-band microwave filter is in the order of kHz. The components used in the invention have mature technology and stable performance, all components can work at room temperature, no special extremely low temperature (mK) refrigeration equipment is needed, and the realization is convenient.

Description

technical field [0001] The invention belongs to the technical field of microwave quantum, in particular to a single microwave quantum amplifier based on extremely narrowband filtering and back-pass effect. Background technique [0002] Detecting microwave quantum is the focus of current quantum information technology research. Due to the low energy of single microwave quantum, it is difficult to measure by conventional detection methods. The existing implementation methods include superconducting Josephson junction technology, micro-nano mechanism up-conversion technology, whispering gallery up-conversion technology and modulated microwave optical up-conversion technology. Among them, superconducting Josephson junction detectors and micro-nano mechanism up-conversion detectors all require extremely low temperature (10mK) refrigeration conditions, which are difficult to design, process and experiment, and are not conducive to engineering applications. The detection efficienc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B10/70
CPCH04B10/70Y02P70/50
Inventor 吴养曹陆军李桂红赵军民张雪松严会玲栾添赵卫岗李宏科郭明
Owner CHINA ELECTRONICS TECH GRP NO 39 RES INST