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Physics Maths Engineering

Nitrogen-vacancy centers in diamond: discovery of additional electronic states

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Minh Tuan Luu,

Minh Tuan Luu


Ali Tayefeh Younesi,

Ali Tayefeh Younesi


Ronald Ulbricht

Ronald Ulbricht


  Peer Reviewed

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© attribution CC-BY

  • 0

rating
443 Views

Added on

2024-12-26

Doi: https://doi.org/10.1088/2633-4356/ad61b3

Related Subjects
Physics
Math
Chemistry
Computer science
Engineering
Earth science
Biology

Abstract

Abstract Nitrogen-vacancy (NV) defect centers in diamond are key to applications in quantum sensing and quantum computing. They create localized electronic states in the diamond lattice with distinct population relaxation pathways following photoexcitation that ultimately enable its unique properties. The defect is known to exist in two charge states: neutral and negative, with respectively one and two known optically-active electronic transitions. Here, we report on the observation of a large number of hitherto undiscovered excited electronic states in both charge states as evidenced by distinct optical transitions in the infrared to ultraviolet part of the spectrum. These transitions are observed by monitoring the electronic relaxation of NV centers after photoexcitation using transient absorption spectroscopy, directly probing transient phenomena occurring on timescales from femtoseconds to microseconds. We also for the first time probed the electron transfer dynamics from the 3 E state of NV− to nearby single-substitutional nitrogen defects (N s ) that leads to the well-known effect of NV photoluminescence quenching.

Key Questions

What are nitrogen-vacancy (NV) centers in diamond?

Nitrogen-vacancy centers are point defects in diamond where a nitrogen atom replaces a carbon atom adjacent to a vacant site. These defects have unique electronic and spin properties, making them valuable for applications in quantum sensing and quantum computing.

What was the significant discovery reported in this study?

The study reported the observation of several previously undiscovered excited electronic states in both neutral and negatively charged NV centers. These states were identified through distinct optical transitions ranging from the infrared to ultraviolet spectrum.

How were these additional electronic states detected?

The researchers employed transient absorption spectroscopy to monitor the electronic relaxation of NV centers after photoexcitation. This technique allowed them to observe transient phenomena occurring on timescales from femtoseconds to microseconds, revealing the additional electronic states.

What implications does this discovery have for quantum technologies?

Understanding these additional electronic states provides deeper insight into the electronic structure of NV centers, which is crucial for optimizing their performance in quantum sensing and quantum computing applications. It also opens avenues for exploring new quantum phenomena and developing advanced quantum devices.

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ARTICLE USAGE


Article usage: Dec-2024 to May-2025
Show by month Manuscript Video Summary
2025 May 124 124
2025 April 73 73
2025 March 69 69
2025 February 48 48
2025 January 119 119
2024 December 10 10
Total 443 443
Show by month Manuscript Video Summary
2025 May 124 124
2025 April 73 73
2025 March 69 69
2025 February 48 48
2025 January 119 119
2024 December 10 10
Total 443 443
Related Subjects
Physics
Math
Chemistry
Computer science
Engineering
Earth science
Biology
copyright icon

© attribution CC-BY

  • 0

rating
443 Views

Added on

2024-12-26

Doi: https://doi.org/10.1088/2633-4356/ad61b3

Related Subjects
Physics
Math
Chemistry
Computer science
Engineering
Earth science
Biology

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