Skip to content
6CCVD Research

The strong spectral- and time-dependent emission of NV center charge state in bulk diamonds

At a Glance

Section titled ā€œAt a Glanceā€
MetadataDetails
Publication Date2025-06-13
JournalJournal of Applied Physics
AuthorsAshish Redhu, Rahul Dhankhar, Sushmita Dey, Rajesh V. Nair
InstitutionsIndian Institute of Technology Ropar

Abstract

Section titled ā€œAbstractā€

We discuss charge state ratio-dependent spectral and temporal emission properties of nitrogen-vacancy (NV) centers in bulk diamonds. An understanding of the charge state ratio in artificially grown diamonds is important to design them for NV-based magnetometry. We show that the NV charge state ratio strongly correlates with the intensity of the zero-phonon line (ZPL) of NVāˆ’, which is supported by an emission dip at 2.87 GHz in spin-selective optical transitions. The Debye-Waller factor of NV centers depends on the charge state ratio, and it increases for NVāˆ’ with an increase in the charge state ratio. We observe that the energy separation between the second phonon sideband (PSB) and ZPL does not scale multiplicatively with that of the energy separation between first PSB and ZPL. This deviation becomes more pronounced with an increase in charge state ratio, suggesting anharmonicity of vibrational energy levels, rather than the usually reported harmonicity. Further, we discuss the inherent relation between decay rates and charge states as a function of emission wavelengths. The excited state lifetime of NV0 remains constant, whereas the NVāˆ’ lifetime decreases with an increase in the charge state ratio, with an overall decrease of 37%. Our results show an emission spectra-based approach to estimate the charge state ratio in diamond crystals, which is helpful for quantum-enhanced sensing and magnetometry.

Tech Support

Section titled ā€œTech Supportā€

Original Source

Section titled ā€œOriginal Sourceā€

References

Section titled ā€œReferencesā€
  1. 2009 - Ultralong spin coherence time in isotopically engineered diamond [Crossref]
  2. 2019 - Oxygenated (113) diamond surface for nitrogen-vacancy quantum sensors with preferential alignment and long coherence time from first principles [Crossref]
  3. 2024 - Extending spin dephasing time of perfectly aligned nitrogen-vacancy centers by mitigating stress distribution on highly misoriented chemical-vapor-deposition diamond [Crossref]
  4. 2019 - Nanodiamonds: Emerging face of future nanotechnology [Crossref]
  5. 2004 - Observation of coherent oscillations in a single electron spin [Crossref]
  6. 2016 - Hybrid quantum device with nitrogen-vacancy centers in diamond coupled to carbon nanotubes [Crossref]
  7. 2008 - Nanoscale magnetic sensing with an individual electronic spin in diamond [Crossref]
  8. 2020 - Distribution of shallow NV centers in diamond revealed by photoluminescence spectroscopy and nanomachining [Crossref]
  9. 2022 - Photoelectric detection of nitrogen-vacancy centers magnetic resonances in diamond: Role of charge exchanges with other optoelectrically active defects [Crossref]
  10. 2018 - Nanophotonic control of the color center emission from nanodiamonds [Crossref]

Reads Similar to This

Polyvagal theory and peek-a-boo - how the therapeutic pas de deux heals attachment trauma Hybrid quantumā€“classical chaotic NEMS Proposal for the search for new spin interactions at the micrometer scale using diamond quantum sensors