A kind of inertial measurement device and method based on diamond nv color center under strong magnetic field

An inertial measurement device, diamond technology, applied in the field of inertial measurement, can solve problems such as limitations, achieve the effect of simple structure, precise adjustment, and prolonged spin coherence time

Active Publication Date: 2021-08-13
BEIHANG UNIV
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Problems solved by technology

[0005] Fang Jiancheng, Zhang Chen and others invented a color center diamond gyroscope based on the inertial rotation measurement realized by electron spin polarization, and the spin coherence time of electron spin can reach the order of us at the longest, which is very important for the use of diamond NV The color center is still a big limitation for the instrument of inertial sensing

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  • A kind of inertial measurement device and method based on diamond nv color center under strong magnetic field
  • A kind of inertial measurement device and method based on diamond nv color center under strong magnetic field
  • A kind of inertial measurement device and method based on diamond nv color center under strong magnetic field

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[0047] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0048] figure 1 An inertial measurement device based on a diamond NV color center is shown, including a pulsed laser generating part, a pulsed microwave generating part, a sample and its manipulation part, and a signal acquisition and data processing part;

[0049] The pulse laser generating part includes a light source 1, a first lens 2, an optical switch 3, a second lens 4, a pulse generator 13, and a light intensity adjustment component 5. The optical ...

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Abstract

The invention discloses an inertial measurement device and method based on a diamond NV color center under a strong magnetic field, using a diamond material containing a high-concentration nitrogen-vacancy (NV) color center as a sensitive element, using a laser and a strong magnetic field of about 500 Gauss Realize the polarization of nuclear spin, and use pulsed laser and pulsed microwave to realize the control and detection of diamond NV color center, so as to realize the measurement of inertial rotation. Compared with the inertial rotation measurement using electron spin, the present invention greatly improves the measurement sensitivity by relying on nuclear polarization, which is of great value to the development of inertial measurement systems based on quantum principles, and will serve various fields in the future, especially civil miniaturization Inertial navigation and attitude measurement system.

Description

technical field [0001] The invention relates to the technical field of inertial measurement, in particular to an inertial measurement device and method based on a diamond NV color center under a strong magnetic field, which can be extended and applied to other quantum systems. Background technique [0002] In recent years, diamond NV color center materials have been widely used in quantum computing, quantum measurement and other fields. The sensitivity δω of the diamond NV color center applied to the measurement of rotational angular velocity is expressed as follows: [0003] [0004] where R represents the contrast ratio, η represents the fluorescence collection efficiency, N represents the number of spins involved in the measurement, and T c represents the spin coherence time, t m Indicates the total measurement time. Obviously the total measurement time t m The larger the value is, the better the angular velocity measurement sensitivity is, and the total measuremen...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01C19/58
CPCG01C19/58
Inventor 房建成柳治张冀星张宁徐丽霞袁珩
Owner BEIHANG UNIV
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