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Microwave power stabilizing device

A microwave power and stabilization device technology, which is applied to waveguide-type devices, controllers with specific characteristics, instruments, etc., can solve the problems of slow response speed, large system static error, small adjustment range, etc., to eliminate the system static error, The effect of stabilizing microwave output power and enhancing system stability

Pending Publication Date: 2018-09-04
UNIV OF SCI & TECH OF CHINA
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Problems solved by technology

However, this method has a small adjustment range, slow response speed, and large static error of the system.

Method used

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  • Microwave power stabilizing device
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specific Embodiment

[0032] Input the microwave signal to be locked to the local oscillator (LO) end of the mixer. It should be noted that since the PID working parameters have not been set at this time, in order to prevent damage to the microwave power amplifier, the microwave signal input to the mixer should be less than -10dBm;

[0033] connecting the radio frequency (RF) terminal of the mixer to the output terminal of the microwave amplifier;

[0034] The output end of the microwave amplifier is connected to the input end of the coupler;

[0035] The output terminal B of the coupler is connected to the microwave antenna, and the microwave is broadcast to be used in the subsequent experiment of the interaction between the microwave and the atom. If there is no microwave antenna, you can also connect other 50 ohm loads to prevent the microwave from reflecting back and damaging the microwave amplifier;

[0036] The coupling output terminal A signal of the coupler is a fixed ratio sampling of th...

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Abstract

The invention discloses a microwave power stabilizing device. The microwave power stabilizing device comprises a PID server, a microwave frequency mixer, a microwave power amplifier, a directional coupler and a microwave antenna which are sequentially connected, wherein the microwave frequency mixer is connected with a microwave source; the directional coupler is sequentially connected with the input end of a differential amplifier of the PID server through a envelope detector and a low pass filter, and the input end of the differential amplifier is further connected with a reference voltage source. By utilizing the frequency mixer, the controlled regulation of microwave power is realized, so that the feedback speed is higher than that of other manners for realizing the microwave power regulation by virtue of a voltage controlled attenuator; and by utilizing the PID server, the loop feedback is relatively rapid, the static difference variation of a system is small, and the system is relatively stable.

Description

technical field [0001] The invention relates to a continuous output microwave power stabilization technology, in particular to a microwave power stabilization device. Background technique [0002] On the one hand, after decades of development, Moore's Law has gradually become inapplicable, and semiconductor computer technology has reached a bottleneck. On the other hand, Peter Shor of Bell Laboratories proposed the concept of quantum computing in 1995. The first idea to solve specific problems is the Shor factorization algorithm. These two aspects make people urgently need to manufacture quantum computers. [0003] The systems that are most likely to realize quantum computing include trapped ion systems, superconducting bit systems, and diamond color centers. However, no matter what kind of system, the most common method of manipulating qubits is microwave manipulation. The microwave output power determines the speed of qubit manipulation. If the microwave power is unstabl...

Claims

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Application Information

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IPC IPC(8): G05B11/42G05F1/46H01P1/00
CPCH01P1/00G05B11/42G05F1/461G05F1/468
Inventor 胡长康崔金明黄运锋李传锋郭光灿
Owner UNIV OF SCI & TECH OF CHINA
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