Spectroscopy of photoionization from the 1E singlet state in nitrogen–vacancy centers in diamond

Published

October 17, 2024

Author(s)

Sean Blakley, Thuc Mai, Stephen Moxim, Jason Ryan, Adam Biacchi, Angela Hight Walker, Robert McMichael

Abstract

The 1E—1A1 singlet manifold of the negatively charged nitrogen vacancy (NV −) center in diamond plays a central role in the quantum information and quantum sensing applications of the NV − center. However, the energy of this manifold within the diamond bandgap and with respect to the 3A2—3E triplet manifold has not been measured directly. Using field-quenching effects on (PL) spectra, we report on the energy gap between the 1E—1A1 singlet manifold and the 3A2 and 3E ground and excited triplet states of the NV − as a function of excitation wavelength and power, temperature, and applied magnetic field in a heavily nitrogen-doped sample. Increased PL and decreased zero-phonon line width from the NV 0 were observed in the presence of an applied magnetic field, indicating ionization from the long-lived 1E singlet state. A temperature-dependent ionization threshold between 532 nm and 550 nm was found, placing the singlet states within the diamond band gap.

Citation

Physical Review B

Volume

110

Issue

13

Pub Type

Journals

Download Paper

https://doi.org/10.1103/PhysRevB.110.134109

Local Download

Keywords

diamond, nitrogen vacancy, color centers, charge state, photoluminescence, photoionization, Bayesian

Citation

Blakley, S. , Mai, T. , Moxim, S. , Ryan, J. , Biacchi, A. , Hight Walker, A. and McMichael, R. (2024), Spectroscopy of photoionization from the 1E singlet state in nitrogen–vacancy centers in diamond, Physical Review B, [online], https://doi.org/10.1103/PhysRevB.110.134109, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=936097 (Accessed January 14, 2025)