Frequency calibration system and method based on diamond nv color center quantum precision measurement device

A technology of precision measurement and frequency calibration, applied in measurement devices, measurement of magnetic variables, measurement of electrical variables, etc., can solve problems such as reducing the contrast of fluorescent signals and reducing the sensitivity of quantum precision measurement devices, and achieves a wide range of magnetic fields and adjustable frequencies. Wide, improve the measurement sensitivity and the effect of signal-to-noise ratio

Active Publication Date: 2020-10-16
BEIHANG UNIV
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Problems solved by technology

But, the inventor notices, can apply the external magnetic field B of different size to diamond NV color center sample in the process of carrying out experiment 0 , due to the Zeeman effect, the frequency f of the diamond NV color center sample NV changes, and the antenna resonant frequency on the antenna platform in the microwave control system in the prior art is fixed, which cannot satisfy the resonant frequency and f NV Matching, which will reduce the fluorescence signal contrast, making the sensitivity of the quantum precision measurement device reduced

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  • Frequency calibration system and method based on diamond nv color center quantum precision measurement device
  • Frequency calibration system and method based on diamond nv color center quantum precision measurement device
  • Frequency calibration system and method based on diamond nv color center quantum precision measurement device

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[0028] Below with the accompanying drawings ( Figure 1-Figure 3 ) to illustrate the present invention.

[0029] figure 1 It is a schematic structural diagram of a frequency calibration system implementing the present invention based on a diamond NV color center quantum precision measurement device. figure 2 yes figure 1 Schematic diagram of the basic structure of the intermediate frequency calibration module. Such as Figure 1 to Figure 2 As shown, the frequency calibration system based on the diamond NV color center quantum precision measurement device includes an antenna platform 14 for accommodating a diamond NV color center sample 141, and a frequency adjustable antenna 142 is arranged on the three-axis translation platform 143 of the antenna platform 14 , the resonant frequency of the frequency-tunable antenna 142 is adjusted to match the frequency of the diamond NV color center sample 141 . The antenna platform 14 is surrounded by a Helmholtz coil 10 to which a cu...

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Abstract

The invention discloses a quantum precision measurement device frequency calibration system and a quantum precision measurement device frequency calibration method based on a diamond NV center. Through adjusting overall impedance of a frequency-adjustable antenna on an antenna platform, the resonant frequency of the frequency-adjustable antenna can be matched with the frequency f<NV> of a diamondNV center sample in a Helmholtz coil magnetic field, so that the frequency calibration of a quantum precision measurement device is realized, and the sensitivity of the quantum precision measurement device is further improved.

Description

technical field [0001] The invention relates to quantum precision measurement technology, especially a frequency calibration system and method based on a diamond NV color center quantum precision measurement device. By adjusting the overall impedance of the frequency adjustable antenna in the antenna platform, the resonant frequency of the frequency adjustable antenna can be adjusted. The frequency f of the diamond NV color center sample in the Helmholtz coil magnetic field NV Matching, so as to realize the frequency calibration of the quantum precision measurement device, and then improve the sensitivity of the quantum precision measurement device. Background technique [0002] In recent years, diamond NV color center (nitrogen-vacancy center) has been widely used in quantum computing, quantum measurement and other fields. In terms of magnetic field measurement, the sensitivity and spatial resolution of the NV color center diamond weak magnetic field measurement technology...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R35/00
CPCG01R33/0023
Inventor 袁珩韩志强杨笑盈徐丽霞张冀星卞国栋范鹏程李铭心
Owner BEIHANG UNIV
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