Reducing inhomogeneous broadening of spin and optical transitions of nitrogen-vacancy centers in high-pressure, high-temperature diamond

Abstract With their optical addressability of individual spins and long coherence time, nitrogen-vacancy (NV) centers in diamond are often called “atom-like solid spin-defects”. As observed with trapped atomic ions, quantum interference mediated by indistinguishable photons was demonstrated between remote NV centers. In high sensitivity DC magnetometry at room temperature, NV ensembles are potentially rivaling with alkali-atom vapor cells. However, local strain induces center-to-center variation of both optical and spin transitions of NV centers. Therefore, advanced engineering of diamond growth toward crystalline perfection is demanded. Here, we report on the synthesis of high-quality HPHT (high-pressure, high-temperature) crystals, demonstrating a small inhomogeneous broadening of the spin transitions, of T 2 * = 1.28 μs, approaching the limit for crystals with natural 13 C abundance, that we determine as T 2 * = 1.48 μs. The contribution from strain and local charges to the inhomogeneous broadening is lowered to ~17 kHz full width at half maximum for NV ensemble within a > 10 mm 3 volume. Looking at optical transitions in low nitrogen crystals, we examine the variation of zero-phonon-line optical transition frequencies at low temperatures, showing a strain contribution below 2 GHz for a large fraction of single NV centers.

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Publication Details

Journal
Communications Materials
Published
2024-10-11
DOI
https://doi.org/10.1038/s43246-024-00660-8
Citations
2
Primary Topic
Diamond and Carbon-based Materials Research
Type
article
Field-Weighted Citation Impact
0.23

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article

Reducing inhomogeneous broadening of spin and optical transitions of nitrogen-vacancy centers in high-pressure, high-temperature diamond

Thai Hien Tran, Ali S. Momenzadeh, Taito Osaka, Fedor Jelezko et al.
2 citations
Communications Materials
Diamond and Carbon-based Materials Research
0.23
article

Reducing inhomogeneous broadening of spin and optical transitions of nitrogen-vacancy centers in high-pressure, high-temperature diamond

Thai Hien Tran, Ali S. Momenzadeh, Taito Osaka, Fedor Jelezko, Jörg Wrachtrup, Shinobu Onoda, Hitoshi Sumiya, H. Takizawa, Hideyuki Hara, Sen Yang, Petr Siyushev, Junichi Isoya, Rémi Blinder, Kenji Tamasaku, Yuliya Mindarava, Norio Morishita
article en
2 citations

Abstract

Abstract With their optical addressability of individual spins and long coherence time, nitrogen-vacancy (NV) centers in diamond are often called “atom-like solid spin-defects”. As observed with trapped atomic ions, quantum interference mediated by indistinguishable photons was demonstrated between remote NV centers. In high sensitivity DC magnetometry at room temperature, NV ensembles are potentially rivaling with alkali-atom vapor cells. However, local strain induces center-to-center variation of both optical and spin transitions of NV centers. Therefore, advanced engineering of diamond growth toward crystalline perfection is demanded. Here, we report on the synthesis of high-quality HPHT (high-pressure, high-temperature) crystals, demonstrating a small inhomogeneous broadening of the spin transitions, of T 2 * = 1.28 μs, approaching the limit for crystals with natural 13 C abundance, that we determine as T 2 * = 1.48 μs. The contribution from strain and local charges to the inhomogeneous broadening is lowered to ~17 kHz full width at half maximum for NV ensemble within a > 10 mm 3 volume. Looking at optical transitions in low nitrogen crystals, we examine the variation of zero-phonon-line optical transition frequencies at low temperatures, showing a strain contribution below 2 GHz for a large fraction of single NV centers.

Communications MaterialsVol. 5(1)
University of Stuttgart (DE), University of Tsukuba (JP), Max Planck Institute for Solid State Research (DE), SPring-8 (JP), Center for Integrated Quantum Science and Technology (DE), National Institutes for Quantum Science and Technology (JP), Sumitomo Electric Industries (Japan) (JP)
Deutsche Forschungsgemeinschaft, Bundesministerium für Bildung und Forschung, Max-Planck-Gesellschaft, University of Tsukuba, Universität Ulm, Universität Stuttgart, QuantERA, Center for Integrated Quantum Science and Technology, Japan Society for the Promotion of Science, RIKEN
Openalex Percentile: Top 51%
Diamond and Carbon-based Materials Research
0.23
DOIOpen Access PDFOpenAlex
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