Diamond color center gyroscope based on Aharonov-Anandan geometric phase and angular velocity measuring method

Abstract

The invention discloses a diamond color center gyroscope based on Aharonov-Anandan geometric phase and an angular velocity measuring method. The gyroscope comprises a reflector, a permanent magnet, a substrate, a diamond sample, first microwave coils, second microwave coils, multiple area array CCDs, multiple filters, a third microwave coil, a first convex lens, a laser device, a polarizing sheet, a dichroscope and a second convex lens. The method for measuring angular velocity by means of the diamond color center gyroscope is further provided. The gyroscope has the advantages of being small in size, large in measuring range and the like, and therefore the gyroscope has potential application in producing ammunition.

Description

technical field [0001] The invention relates to the technical field of magnetic resonance, in particular to a diamond color center gyroscope based on Aharonov-Anandan geometric phase and a corresponding angular velocity measurement method. Background technique [0002] Gyroscope is a sensor used to measure angular rate or angle, mainly used in inertial navigation, attitude control and other fields. There are many types of gyroscopes, which can be divided into mechanical rotor gyroscopes, optical gyroscopes, micro-electromechanical (MEMS) gyroscopes, and quantum gyroscopes according to their working principles. At present, miniaturization is one of the development directions of gyroscopes. Miniaturized gyroscopes can bring some new applications. For example, a relatively common miniaturized gyroscope is MEMS gyroscope based on micro-electromechanical technology. It is used in consumer electronic products such as mobile phones and tablet computers, but the main disadvantage o...

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Problems solved by technology

[0004] At present, there are three main gyroscope solutions based on NV color centers: one is based on the nitrogen nuclear spin in NV, for details, please refer to: Physical Review A 86, 062104 (2012) Stable three-axis nuclear-spin gyroscope in diamond, which uses the quantum state of nitrogen nuclear spins to accumulate rotation-related phases, but it requires a strong alternating magnetic field during the polarization of nitrogen nuclear spins, and the power consumption is large; the other is based on For the scheme of Berry phase on NV electrons, please refer to: Physical Review A 86, 052116 (2012) Gyroscopes based on nitrogen-vacancy centers in diamond. This scheme has a simple structure, but it imposes strict requirements on the stability of the magnetic field. In order for the gyroscope to maintain a theoretical resolution of 0.31 degrees per second, the fluctuation of the magnetic field during the measurement needs to be kept at 3×10 -10 within Gauss; the third is a scheme based on non-Abelian geometric phase, for details, please refer to: Physical Review A 90, 042116 (2014) Non-Abelian geometric phase in the diamond nitrogen-vacancy center, the scheme is achieved by applying a static magnetic field Realize the energy level degeneracy between |0> and |±1>, and then use the degenerate energy level to observe the non-Abelian geometric phase, but due to the influence of the nitrogen nuclear spin in NV, this scheme is difficult to achieve ideal degenerate, so it has a greater impact on the experimental accuracy

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