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Ion trap radio frequency device

An ion trap and radio frequency signal technology, applied in the field of quantum computing, can solve the problems of many noise signals, many logic control units, and reduced ion capture time, so as to reduce noise signals, ensure stability, and improve the effect of time duration

Active Publication Date: 2021-11-30
国开启科量子技术(安徽)有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current feedback control circuit mainly adopts digital PID control circuit. Due to the complex structure of the feedback control circuit and too many logic control units involved, there are many noise signals in the feedback control circuit, and the noise signal will enter the ion together with the radio frequency signal. In the trap, even if the power of the RF signal is stabilized, the ion capture time will still be reduced

Method used

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Examples

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Effect test

Embodiment 1

[0034] Such as figure 2 As shown, the ion trap radio frequency device provided by the embodiment of the present invention includes a noise generator, a frequency selector, a power amplifier, a resonator, a collector, and a controller, wherein:

[0035] The noise generator is used to prepare and output a white noise signal.

[0036] Specifically, such as image 3 As shown, the noise generator includes a resistor R and a constant voltage source V, wherein the resistance of the resistor R is 1M ohm, and the voltage of the constant voltage source V is 5V. When the current passes through the resistor R, the noise generator generates a white noise signal.

[0037] A frequency selector is used to extract a radio frequency signal of a specific frequency from a white noise signal.

[0038] Among them, a 48MHz radio frequency signal is usually used to drive the ions in the ion trap, so the frequency selector needs to extract a radio frequency signal with a frequency of 48MHz from a ...

Embodiment 2

[0047] The controller includes a temperature extraction module and a temperature control module. in:

[0048] The temperature extraction module is used for real-time calculation of the power of the radio frequency signal output by the collector and according to the power, real-time calculation of the ambient temperature of the channel where the radio frequency signal is located;

[0049] The temperature control module is used to judge in real time whether the power of the radio frequency signal output by the resonator changes according to the ambient temperature of the channel where the radio frequency signal is located.

[0050] Among them, the ambient temperature of the channel where the radio frequency signal is located is proportional to the power of the radio frequency signal output by the resonator, that is, the greater the power of the radio frequency signal output by the resonator, the greater the ambient temperature of the channel where the radio frequency signal is l...

Embodiment 3

[0055] Specifically, such as Image 6 As shown, the input signal ui is a white noise signal. After the white noise signal is amplified by the transistor T, a 48MHz radio frequency signal is selected in the LC resonant circuit, and the radio frequency signal is output to finally obtain a 48MHz radio frequency signal.

[0056] As an optional embodiment of the present invention, the temperature control module is a temperature control box.

[0057] Among them, when the ambient temperature of the channel where the radio frequency signal is located changes, the radio frequency signal output by the resonator will also fluctuate when it reaches the ion trap, and at the same time, the radio frequency signal output by the collector will also fluctuate, and then the radio frequency signal is input to the temperature extraction module.

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PUM

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Abstract

The invention discloses an ion trap radio frequency device, which relates to the field of quantum computing. The ion trap radio frequency device comprises a noise generator, a frequency selector, a power amplifier, a resonator, a collector and a controller, wherein the noise generator is used for preparing and outputting a white noise signal, and the frequency selector is used for extracting a radio frequency signal with a specific frequency from the white noise signal; the power amplifier is used for increasing the power of a radio frequency signal with a specific frequency, the resonator is used for coupling the radio frequency signal with the specific frequency into the ion trap, the collector is used for collecting the radio frequency signal output by the resonator in real time according to a set proportion, and the controller is used for, according to the power of the radio frequency signal output by the collector, controlling the power of the white noise signal output by the noise generator in real time. The stability of the radio frequency signal input into the ion trap is ensured, and the ion trapping time of the ion trap is prolonged.

Description

technical field [0001] The invention relates to the technical field of quantum computing, in particular to an ion trap radio frequency device. Background technique [0002] In the field of quantum computing, ion trap radio frequency devices are usually composed of radio frequency amplifiers, resonant step-up transformers and other components. However, since the ion trap radio frequency device is susceptible to interference from fluctuations in the ambient temperature of the channel where the radio frequency signal is located, the power of the output radio frequency signal will fluctuate, resulting in instability of the radio frequency signal and reducing the ion trapping time. Therefore, the ion trap radio frequency device usually needs to add a feedback control circuit to ensure the power stability of the output radio frequency signal. The current feedback control circuit mainly adopts digital PID control circuit. Due to the complex structure of the feedback control circui...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01J37/32
CPCH01J37/32183Y02D30/70
Inventor 陈柳平万相奎李伍一王其兵韩琢
Owner 国开启科量子技术(安徽)有限公司
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