Ab-initio theory of nuclear spin flip processes within NV center of diamond

ORAL

Abstract

SDS (zero-field), (SAI) hyperfine and (IQI) quadrupolar tensors of NV (nitrogen vacancy) are both extensively measured and theoretically modeled before already[1,2]. All of these tensors depict the interactions between electronic (S) and nuclear (I) spin. 14N nuclei spins are usually treated devoid from relaxation processes during timeframes of optical cycles. However, optical pumping into the 3E excited state offers additional ΔI=±1,±2 flipping channels via orbital coupling of the quadrupolar (Q) tensor. In conjunction with experimental work under resonant optical excitation at cryogenic conditions we theoretically model the possible spin-flip processes acting within the 3E excited state. In summary, in the present talk I will show that the strength of such processes can be predicted directly from first principles supporting the experimental observations [3].

[1] M. W. Doherty et al. Physics Reports 528.1 (2013): 1-45.

[2] J. R. Maze, et al. New Journal of Physics 13.2 (2011): 025025.

[3] R. Monge, T. Delord, G. Thiering, A. Gali, C. A. Meriles, “Resonant versus non-resonant spin readout of a nitrogen-vacancy center in diamond under cryogenic conditions”, submitted. https://cmeriles.ccny.cuny.edu/?page_id=523

* A. G. acknowledges the support from the NKFIH in Hungary for the National Excellence Program (Grant No. KKP129866), the Quantum Information National Laboratory (Grant No. 2022-2.1.1-NL-2022-0000), and the EU QuantERA II MAESTRO project and from the European Commission for the QuMicro project (Grant No. 101046911). G. T. were supported by the János Bolyai Research Scholarship. and acknowledges the high-performance computational resources provided by KIFÜ HPC (Governmental Agency for IT Development) institute of Hungary at the Komondor cluster. R. Monge, T. Delord and C. A. Meriles acknowledge support from the National Science Foundation through grants NSF-2216838, NSF-2203904, and NSF-1903839. R. Monge, T. Delord and C. A. Meriles also acknowledge access to the facilities and research infrastructure of the NSF CREST IDEALS, grant number NSF-2112550.

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Publication: R. Monge, T. Delord, G. Thiering, A. Gali, C. A. Meriles, "Resonant versus non-resonant spin readout of a nitrogen-vacancy center in diamond under cryogenic conditions", submitted. https://cmeriles.ccny.cuny.edu/?page_id=523

Presenters

  • Gergő Thiering

    Wigner Research Centre for Physics, Wigner Research Centre

Authors

  • Gergő Thiering

    Wigner Research Centre for Physics, Wigner Research Centre

  • Richard Monge

    The Graduate Center, City University of New York, City College of New York, The City College of New York

  • Tom Delord

    City College of New York

  • Carlos A Meriles

    City College of New York, The City College of New York

  • Ádám Gali

    Wigner Research Centre for Physics