AC sensing using nitrogen vacancy centers in a diamond anvil cell up to 6 GPa

TL;DR

This paper demonstrates AC magnetic field sensing using nitrogen vacancy centers in diamond within a diamond anvil cell up to 6 GPa, highlighting potential for high-pressure quantum sensing despite sensitivity challenges.

Contribution

It presents the first synchronized AC sensing and readout at pressures up to 6 GPa using NV centers, advancing high-pressure quantum sensing techniques.

Findings

Successful AC sensing up to 6 GPa

Sensitivity reduction due to inhomogeneities

Potential for high-resolution optical magnetic resonance

Abstract

Nitrogen-vacancy color centers in diamond have attracted broad attention as quantum sensors for both static and dynamic magnetic, electrical, strain and thermal fields, and are particularly attractive for quantum sensing under pressure in diamond anvil cells. Optically-based nuclear magnetic resonance may be possible at pressures greater than a few GPa, and offers an attractive alternative to conventional Faraday-induction based detection. Here we present AC sensing results and demonstrate synchronized readout up to 6 GPa, but find that the sensitivity is reduced due to inhomogeneities of the microwave field and pressure within the sample space. These experiments enable the possibility for all-optical high resolution magnetic resonance of nanoliter sample volumes at high pressures.