Hyperfine-Enhanced Gyromagnetic Ratio of a Nuclear Spin in Diamond

TL;DR

This paper demonstrates a method to significantly enhance the nuclear gyromagnetic ratio in diamond by coupling nuclear and electronic spins, enabling faster nuclear spin control and broadening potential applications in quantum systems.

Contribution

The authors experimentally achieve over 50-fold enhancement of the nuclear gyromagnetic ratio using NV centers, enabling rapid nuclear spin manipulation in solid-state systems.

Findings

Over 50-fold enhancement of nuclear gyromagnetic ratio achieved

Enhanced control allows faster nuclear spin rotations

Method aligns with second-order perturbation theory predictions

Abstract

Nuclear spins in the solid state environment of diamond are highly coherent, but difficult to rapidly control due to the small nuclear gyromagnetic ratio. Here we demonstrate a more than 50-fold enhancement of the effective nuclear gyromagnetic ratio by coupling the nuclear spin to an electronic spin of a nitrogen-vacancy (NV) center in diamond. The enhancement allows for faster nuclear spin rotations and is in good agreement with second-order perturbation theory. The method may be applied to other systems with similar electron-nuclear spin interactions, such as phosphorous donors in silicon, opening up the possibility of fast and direct nuclear spin control in coupled spin systems.