The fine structure of the neutral nitrogen-vacancy center in diamond
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2019-07-20 |
| Journal | Nanophotonics |
| Authors | M. S. J. Barson, Elmars Krausz, Neil B. Manson, Marcus W. Doherty |
| Institutions | Australian National University |
| Citations | 33 |
Abstract
Section titled āAbstractāAbstract The nitrogen-vacancy (NV) center in diamond is a widely utilized system due to its useful quantum properties. Almost all research focuses on the negative charge state (NV ā ) and comparatively little is understood about the neutral charge state (NV 0 ). This is surprising as the charge state often fluctuates between NV 0 and NV ā during measurements. There are potentially under-utilized technical applications that could take advantage of NV 0 , either by improving the performance of NV 0 or utilizing NV ā directly. However, the fine structure of NV 0 has not been observed. Here, we rectify this lack of knowledge by performing magnetic circular dichroism measurements that quantitatively determine the fine structure of NV 0 . The observed behavior is accurately described by spin-Hamiltonians in the ground and excited states with the ground state yielding a spin-orbit coupling of Ī» = 2.24 Ā± 0.05 GHz and a orbital g -factor of 0.0186 Ā± 0.0005. The reasons why this fine structure has not been previously measured are discussed and strain-broadening is concluded to be the likely reason.