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A method for improving the signal-to-noise ratio of diamond negatively charged nv color center detection

A diamond, signal-to-noise ratio technology, applied in the field of atomic spin effect quantum sensing measurement technology, can solve the problem of low signal-to-noise ratio, inability to meet the needs of micro-miniature high-sensitivity quantum sensing measurement applications, signal processing and application impact, etc. problem, to achieve the effect of suppressing photon shot noise, improving the detection signal-to-noise ratio, and improving the signal-to-noise ratio

Active Publication Date: 2022-01-07
BEIHANG UNIV
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Problems solved by technology

Due to the influence of photon shot noise, the existing detection methods cannot suppress this noise very well, and cannot meet the needs of some micro-miniature high-sensitivity quantum sensor measurement applications, and the low signal-to-noise ratio has caused serious damage to the later signal processing and application. great influence

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  • A method for improving the signal-to-noise ratio of diamond negatively charged nv color center detection
  • A method for improving the signal-to-noise ratio of diamond negatively charged nv color center detection
  • A method for improving the signal-to-noise ratio of diamond negatively charged nv color center detection

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[0025] Below with the accompanying drawings ( Figure 1-Figure 3 ) and Examples illustrate the present invention.

[0026] figure 1 It is a schematic diagram of the pulse waveform structure of the exponential waveform pulse laser used in the method for improving the signal-to-noise ratio of diamond negatively charged NV color center detection in the present invention. figure 2 It is an energy level diagram of diamond negatively charged NV color centers involved in the method for improving the detection signal-to-noise ratio of diamond negatively charged NV color centers in the present invention. image 3 It is a structural schematic diagram of a method for implementing a method for improving the signal-to-noise ratio of diamond negatively charged NV color center detection in the present invention. refer to Figure 1 to Figure 3 As shown, a method for improving the signal-to-noise ratio of diamond negatively charged NV color center detection is characterized in that, in the...

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Abstract

A method for improving the signal-to-noise ratio of diamond negatively charged NV color center detection, by using an exponential pulse waveform laser as a detection pulse instead of a traditional square wave pulse to detect diamond negatively charged NV during the detection process of diamond negatively charged NV color center sensing measurement The color center can suppress photon shot noise, thereby improving the detection signal-to-noise ratio.

Description

technical field [0001] The invention relates to atomic spin effect quantum sensing measurement technology, in particular to a method for improving the signal-to-noise ratio of diamond negatively charged NV color center detection by using exponential pulse waveform in the detection process of diamond negatively charged NV color center sensing measurement The laser is used as the detection pulse instead of the traditional square wave pulse to detect the negatively charged NV color center of diamond, which can suppress photon shot noise, thereby improving the detection signal-to-noise ratio. Background technique [0002] Quantum sensing measurement research based on atomic spin effect has become one of the most important development directions in the field of sensing measurement. The nitrogen-vacancy color center (Nitrogen-Vacancy, NV) in diamond is the most widely used in atomic spin effect quantum sensing measurement. NV color centers, as one of the various color centers of ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/64
CPCG01N21/6402
Inventor 袁珩刘田正张冀星徐丽霞刘禹辰夏斯港李湘云王思娴
Owner BEIHANG UNIV