Coherent electrical control of single electron spin in diamond nitrogen-vacancy center
Authors: Wu Jian-Dong , Cheng Zhi , Ye Xiang-Yu , Li Zhao-Kai , Wang Peng-Fei , Tian Chang-Lin , Chen Hong-Wei ,   Institutes of Physical Science and Information Technology, Anhui University, Hefei 230601, China,   High Magnetic Field Laboratory, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China,   School of Physical Sciences, University of Science and Technology of China, Hefei 230026, China,   The First Affiliated Hospital of USTC, Hefei 230001, China,   Division of Life Sciences and Medicine, University of Science and Technolgy of China, Hefei 230026, China
Published: May 2022

The nitrogen-vacancy (NV) color center quantum system in diamond has shown great application potential in the fields of solid-state quantum computing and quantum precision measurement because of its unique advantages such as single-spin addressing and manipulation and long quantum coherence time at room temperature. The precise manipulation technology of single spin is particularly important for the development of the application of NV center. The common spin manipulation methods used in NV center quantum system are to drive and manipulate the electron spin by resonant alternating magnetic field. In recent years, the electrical control of quantum spin has attracted extensive attention. In this paper, using the alternating electric field to control the electron spin of NV center is studied. The alternating electric field generated by the electrode successfully drives the Rabi oscillation of the NV center spin between the <inline-formula><tex-math id="M4">\begin{document}$\Delta m_{\rm{s}}=\pm2$\end{document}</tex-math><alternatives><graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="11-20220410_M4.jpg"/><graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="11-20220410_M4.png"/></alternatives></inline-formula> magnetic-dipole forbidden energy levels of <inline-formula><tex-math id="M5">\begin{document}$|m_{\rm{s}}=-1\rangle$\end{document}</tex-math><alternatives><graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="11-20220410_M5.jpg"/><graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="11-20220410_M5.png"/></alternatives></inline-formula> and <inline-formula><tex-math id="M6">\begin{document}$|m_{\rm{s}}=+1\rangle$\end{document}</tex-math><alternatives><graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="11-20220410_M6.jpg"/><graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="11-20220410_M6.png"/></alternatives></inline-formula>. Further studies show that the frequency of the electrically driven Rabi oscillation is controlled by the power of the driven electric field but independent of the resonant frequency of the electric field. The combination of spin electric control and magnetic control technology can realize the full manipulation of the direct transition among the three spin energy levels of NV center, thus promoting the development of the researches and applications of NV quantum system in the fields of quantum simulation, quantum computing, precision measurement of electromagnetic field, etc.