We theoretically investigate spin decoherence of a single nitrogen-vacancy (NV) center in diamond. Using the spin coherent state P-representation method, coherence evolution of the NV center surrounded by nitrogen electron spins (N) is simulated. We find that spin decoherence time as well as free-induction decay of the NV center depend on the spatial configuration of N spins. Both the spin decoherence rate (1/T2) and dephasing rate (1/T2*) of the NV center increase linearly with the concentration of the N spins. Using the P-representation method, we also demonstrate extracting noise spectrum of the N spin bath, which will provide promising pathways for designing an optimum pulse sequence to suppress the decoherence in diamond.
@article{arxiv.1209.3365,
title = {Spin decoherence and electron spin bath noise of a nitrogen-vacancy center in diamond},
author = {Zhi-Hui Wang and Susumu Takahashi},
journal= {arXiv preprint arXiv:1209.3365},
year = {2015}
}
Comments
Including 12 pages, 4 figures and supplemental material