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Accurate hyperfine tensors for solid state quantum applications: case of the NV center in diamond
Eotvos Lorand Univ, Hungary; MTA ELTE Lendulet Momentum NewQubit Res Grp, Hungary.
Linköping University, Department of Physics, Chemistry and Biology, Theoretical Physics. Linköping University, Faculty of Science & Engineering. Eotvos Lorand Univ, Hungary; MTA ELTE Lendulet Momentum NewQubit Res Grp, Hungary.ORCID iD: 0000-0003-0111-5101
2024 (English)In: Communications Physics, E-ISSN 2399-3650, Vol. 7, no 1, article id 178Article in journal (Refereed) Published
Abstract [en]

The decoherence of point defect qubits is often governed by the electron spin-nuclear spin hyperfine interaction that can be parameterized by using ab inito calculations in principle. So far most of the theoretical works have focused on the hyperfine interaction of the closest nuclear spins, while the accuracy of the predictions for distinct nuclear spins is barely discussed. Here we demonstrate for the case of the NV center in diamond that the absolute relative error of the computed hyperfine parameters can exceed 100% using an industry standards first-principles code. To overcome this issue, we implement an alternative method and report on significantly improved hyperfine values with O(1%) relative mean error at all distances. The provided accurate hyperfine data for the NV center enables high-precision simulation of NV quantum nodes for quantum information processing and positioning of nuclear spins by comparing experimental and theoretical hyperfine data.

Place, publisher, year, edition, pages
NATURE PORTFOLIO , 2024. Vol. 7, no 1, article id 178
National Category
Theoretical Chemistry
Identifiers
URN: urn:nbn:se:liu:diva-205160DOI: 10.1038/s42005-024-01668-9ISI: 001238581900003OAI: oai:DiVA.org:liu-205160DiVA, id: diva2:1874422
Note

Funding Agencies|Magyar Tudomnyos Akadmia (Hungarian Academy of Sciences) [2022-2.1.1-NL-2022-00004, FK 145395]; National Research, Development and Innovation Office of Hungary (NKFIH) within the Quantum Information National Laboratory of Hungary [2018.0071]; Knut and Alice Wallenberg Foundation through the WBSQD2 project [2022-06725]; Swedish Research Council

Available from: 2024-06-20 Created: 2024-06-20 Last updated: 2024-06-20

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