High temperature spectroscopy of ensembles of nitrogen-vacancy centers in diamond

Magnetometry with Ensembles of Nitrogen Vacancy Centers in Bulk Diamond

This thesis summarizes experiments conducted to develop a high sensitivity vector magnetometer using nitrogen vacancy (NV) centers in a bulk diamond sample. This project began by analyzing the sensitivity of a single NV orientation using a continuous wave electron spin resonance approach. A protocol for determining the diamond's orientation was developed to map vector magnetic field readings in...

High - precision electron - spin sensing with ensembles of nitrogen - vacancy centers in diamond

This thesis describes physical background and an experimental realization of a bulk diamond magnetic field and temperature sensor. The sensing is done using continuous-wave electronspin resonance spectra of nitrogen-vacancy centers in diamond. Experiments were performed using a light-trapping diamond waveguide sample, with which we estimate to address 10" nitrogen-vacancy centers simultaneously...

Photophysics of single nitrogen-vacancy centers in diamond nanocrystals

Mechanical spin control of nitrogen-vacancy centers in diamond.

We demonstrate direct coupling between phonons and diamond nitrogen-vacancy (NV) center spins by driving spin transitions with mechanically generated harmonic strain at room temperature. The amplitude of the mechanically driven spin signal varies with the spatial periodicity of the stress standing wave within the diamond substrate, verifying that we drive NV center spins mechanically. These spi...

Longitudinal spin relaxation in nitrogen-vacancy ensembles in diamond

We present an experimental study of the longitudinal electron-spin relaxation of ensembles of negatively charged nitrogen-vacancy (NV–) centers in diamond. The measurements were performed with samples having different NV– concentrations and at different temperatures and magnetic fields. We found that the relaxation rate T–1 1 increases when transition frequencies in NV – centers with different ...