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6CCVD Research

Nitrogen-vacancy centers with high intrinsic effective fields as probes for electric noise

At a Glance

Section titled ā€œAt a Glanceā€
MetadataDetails
Publication Date2025-04-21
JournalApplied Physics Letters
AuthorsChangfeng Weng, Jiaxin Zhao, Mengyuan Cai, Yuanjie Yang, Shengran Lin
InstitutionsUniversity of Science and Technology of China, Chinese Academy of Sciences

Abstract

Section titled ā€œAbstractā€

Characterizing electric field noise in diamond is crucial for utilizing nitrogen-vacancy (NV) centers as probes and qubits. However, NV centers under axial magnetic fields are sensitive to magnetic fields and thus are limited in their ability to characterize electric fields directly. In this study, we engineered NV centers exhibiting strong intrinsic effective electric fields through ion implantation into CVD-grown diamond. We selected seven NV centers with splittings in the range of 18-66 MHz as the focus of our research. By virtue of the suppression effect of the strong effective field on the magnetic field, the energy level shift caused by the magnetic field was reduced by two orders of magnitude. Combining spectral decomposition techniques, we extracted the electric noise spectrum in the low-frequency range from the environmental noise. Our results indicate that the near-surface electrical noise of the diamond deviates from the 1/f noise model, and two characteristic correlation times were observed within the measured frequency range (1-10 MHz).

Tech Support

Section titled ā€œTech Supportā€

Original Source

Section titled ā€œOriginal Sourceā€

References

Section titled ā€œReferencesā€
  1. 2020 - Efficient implementation of a quantum algorithm in a single nitrogen-vacancy center of diamond [Crossref]
  2. 2024 - Telecom networking with a diamond quantum memory [Crossref]
  3. 2021 - Nanoscale electric-field imaging based on a quantum sensor and its charge-state control under ambient condition [Crossref]
  4. 2018 - Mapping the local spatial charge in defective diamond by means of N-V sensors-a self-diagnostic concept [Crossref]
  5. 2019 - Demonstration of vector magnetic field sensing by simultaneous control of nitrogen-vacancy centers in diamond using multi-frequency microwave pulses [Crossref]
  6. 2020 - Determination of the three-dimensional magnetic field vector orientation with nitrogen vacany centers in diamond [Crossref]
  7. 2024 - Magnetic sensitivity enhancement via polarimetric excitation and detection of an ensemble of nv centers [Crossref]
  8. 2022 - Decoherence of nitrogen-vacancy spin ensembles in a nitrogen electron-nuclear spin bath in diamond [Crossref]
  9. 2015 - Decoherence of near-surface nitrogen-vacancy centers due to electric field noise [Crossref]
  10. 2020 - Nanoscale electrometry based on a magnetic-field-resistant spin sensor [Crossref]

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