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arXiv · 1209.3365

Spin decoherence and electron spin bath noise of a nitrogen-vacancy center in diamond

Zhi-Hui Wang·Susumu Takahashi
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Abstract

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.

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Zhi-Hui Wang, Susumu Takahashi. 2012-09-15. Spin decoherence and electron spin bath noise of a nitrogen-vacancy center in diamond. https://doi.org/10.1103/physrevb.87.115122

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