Eur. Phys. J. D (2016) 70: 210
https://doi.org/10.1140/epjd/e2016-60693-8

Regular Article

Polarization for the strong coupled nuclear spin near ground state level anti-crossing point in nitrogen-vacancy center

¹ Beijing Computational Science Research Center, Beijing 100084, P.R. China
² School of Mathematics and Science, Guizhou Normal University, Guiyang 550001, P.R. China

^a e-mail: wpking@csrc.ac.cn

Received: 5 December 2015
Received in final form: 17 July 2016
Published online: 18 October 2016

Abstract

We study the dynamical polarization of the nearby nuclear spins in NV center system when magnetic field is tuned to the ground state level anti-crossing point. We obtain an analytical result which gives a good explanation and an explicit physical picture to the experiment [H.J. Wang et al., Nat. Commun. 4, 1940 (2013)] both for the electron-nuclear eigenstates population and the nuclear spin polarization. Our theory may be exploited to measure the transverse part of the hyperfine tensor and testify the correction of the hyperfine tensor calculated by ab initio method.