Low-Temperature Photophysics of Single Nitrogen-Vacancy Centers in Diamond
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2022-04-29 |
| Journal | Physical Review Letters |
| Authors | Jodok Happacher, David A. Broadway, Juanita Bocquel, Patrick Reiser, A. JimƩnez |
| Institutions | Centre National de la Recherche Scientifique, UniversitƩ de Montpellier |
| Citations | 23 |
Abstract
Section titled āAbstractāWe investigate the magnetic field dependent photophysics of individual nitrogen-vacancy (NV) color centers in diamond under cryogenic conditions. At distinct magnetic fields, we observe significant reductions in the NV photoluminescence rate, which indicate a marked decrease in the optical readout efficiency of the NVās ground state spin. We assign these dips to excited state level anticrossings, which occur at magnetic fields that strongly depend on the effective, local strain environment of the NV center. Our results offer new insights into the structure of the NVsā excited states and a new tool for their effective characterization. Using this tool, we observe strong indications for strain-dependent variations of the NVās orbital g factor, obtain new insights into NV charge state dynamics, and draw important conclusions regarding the applicability of NV centers for low-temperature quantum sensing.