Relaxation Processes in Dipole-Coupled Nitrogen-Vacancy Centers in Zero Field: Application in Magnetometry
Résumé
We study relaxation processes in dipolar-coupled negatively charged nitrogen-vacancy ($\mathrm{N}$-${V}^{\ensuremath{-}}$) centers close to zero field. Specifically, we uncover regimes where flip-flop and double-flip processes, as well mixing induced by local electric fields, play a significant role $\mathrm{N}$-$V$--$\mathrm{N}$-$V$ cross relaxation. Our results are relevant for understanding decoherence many-body spin systems, high-sensitivity magneto- electrometry with long-lived interacting solid-state spins. As proof of principle, present an orientation microwave-free magnetometer based on
Domaines
Sciences de l'ingénieur [physics]
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