Low-Field Nuclear Polarization Using Nitrogen Vacancy Centers in Diamonds

Y. Hovav, B. Naydenov, F. Jelezko, N. Bar-Gill

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14 Scopus citations

Abstract

It was recently demonstrated that bulk nuclear polarization can be obtained using nitrogen vacancy (NV) color centers in diamonds, even at ambient conditions. This is based on the optical polarization of the NV electron spin, and using several polarization transfer methods. One such method is the nuclear orientation via electron spin locking (NOVEL) sequence, where a spin-locked sequence is applied on the NV spin, with a microwave power equal to the nuclear precession frequency. This was performed at relatively high fields, to allow for both polarization transfer and noise decoupling. As a result, this scheme requires accurate magnetic field alignment in order preserve the NV properties. Such a requirement may be undesired or impractical in many practical scenarios. Here we present a new sequence, termed the refocused NOVEL, which can be used for polarization transfer (and detection) even at low fields. Numerical simulations are performed, taking into account both the spin Hamiltonian and spin decoherence, and we show that, under realistic parameters, it can outperform the NOVEL sequence.

Original languageAmerican English
Article number060405
JournalPhysical Review Letters
Volume120
Issue number6
DOIs
StatePublished - 8 Feb 2018

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© 2018 American Physical Society.

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