基于金剛石氮—空位體系的量子陀螺儀的研究
[Abstract]:Gyroscope has experienced great development and has been widely used since it came out. Consumer electronics, from aerospace to robots and cameras, can see it. At present, the gyroscope's demand for precision can be solved by existing technology, but the desire for miniaturization is common in all levels of gyroscope. Miniaturization is one of the development trends of gyroscopes at present. NV gyroscopes have the advantage of small size. With the help of magnetic resonance pulse technology, low frequency noise (magnetic field, temperature fluctuation) can be effectively suppressed, which is attracting more and more people's interest. There are two main schemes for NV gyroscopes: eNVG and nNVG, in which eNVG requires high stability of magnetic field and nNVG requires a strong driving field to polarize the spin of the nitrogen nucleus which is difficult to initialize. Here we propose a gyroscope scheme based on Ahronov-Anandan (A-A) geometric phase, in which angular rate is extracted by reading the rotated angle in the NV color center in the form of A-A geometric phase. Because of the dynamic decoupling technique, the coherent time can be prolonged and the low frequency noise can be effectively counteracted. It solves the problem that eNVG requires high stability of magnetic field, and it is difficult to initialize nNVG. The gyroscope has the characteristics of large measurement range and fast start-up time. When the sensitivity is 0.2deg/s/ (?) Hz, the range can reach 鹵6.69 脳 10 ~ (6) degg / s. Startup time is in the order of microsecond. This paper is divided into three parts. The first part briefly introduces the research status of common gyroscopes and NV gyroscopes, the second part introduces the theoretical scheme based on A-A phase gyroscopes and the evaluation of related performance, and puts forward the possibility of improvement. The third part makes a brief summary and prospect of the full text.
【學(xué)位授予單位】:中國(guó)科學(xué)技術(shù)大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2014
【分類(lèi)號(hào)】:TN96
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