Design and simulation of a strong and uniform microwave antenna for a large volume of nitrogen-vacancy ensembles in diamond

Chanhu Park, Donghun Lee

    Research output: Contribution to journalArticlepeer-review

    2 Citations (Scopus)

    Abstract

    We present a three-dimensional microwave antenna design, which can provide strong and spatially homogeneous GHz microwaves for efficient driving of nitrogen-vacancy (NV) ensembles in a diamond. From numerical simulation, we find the field strength to be as large as ~ 21 G at 2.87 GHz equivalent to an ~ 60 MHz Rabi frequency. In addition, the field remains uniform over an ~ mm3 volume of the diamond. We determine the antenna parameters and configurations based on quantitative analyses of the simulation results in terms of the loop radius, the number of coil, the dielectric materials and the coil configurations of the solenoid and Helmholtz coil. The antenna design studied in this research can be used in various sensing applications based on the NV ensemble, where a strong and uniform microwave drive is necessary.

    Original languageEnglish
    Pages (from-to)280-283
    Number of pages4
    JournalJournal of the Korean Physical Society
    Volume78
    Issue number4
    DOIs
    Publication statusPublished - 2021 Feb

    Bibliographical note

    Publisher Copyright:
    © 2021, The Korean Physical Society.

    Keywords

    • Diamond NV ensemble
    • Microwave antenna
    • Quantum sensing

    ASJC Scopus subject areas

    • General Physics and Astronomy

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