All-optical thermometry and the thermal properties of the optically detected spin resonances of the NV center in nano-diamond

TL;DR

This paper explores the thermal properties of NV center spin resonances in nano-diamond and introduces an all-optical thermometry method based on the optical Debye-Waller factor for high-sensitivity temperature measurements.

Contribution

It provides a comprehensive analysis of NV center thermal properties and proposes a novel all-optical thermometry technique leveraging the optical Debye-Waller factor.

Findings

Thermal properties of NV center spin resonances characterized.

All-optical thermometry method demonstrated.

Potential for sub-cellular biological temperature sensing.

Abstract

The negatively-charged nitrogen-vacancy (NV) center in diamond is at the frontier of quantum nano-metrology and bio-sensing. Recent attention has focused on the application of high-sensitivity thermometry using the spin resonances of NV centers in nano-diamond to sub-cellular biological and biomedical research. Here, we report a comprehensive investigation of the thermal properties of the center's spin resonances and demonstrate an alternate all-optical NV thermometry technique that exploits the temperature dependence of the center's optical Debye-Waller factor.