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Circularly polarized microwave antenna for nitrogen vacancy centers in diamond

At a Glance

Section titled ā€œAt a Glanceā€
MetadataDetails
Publication Date2020-03-01
JournalReview of Scientific Instruments
AuthorsVitaly Yaroshenko, Vladimir V. Soshenko, Vadim Vorobyov, Stepan V. Bolshedvorskii, Elizaveta Nenasheva
InstitutionsP.N. Lebedev Physical Institute of the Russian Academy of Sciences, Russian Quantum Center
Citations21

Abstract

Section titled ā€œAbstractā€

The sensing applications of nitrogen-vacancy color centers in a diamond require an efficient manipulation of the color center ground state over the whole volume of an ensemble. Thus, it is necessary to produce strong uniform magnetic fields of a well-defined circular polarization at microwave frequencies. In this paper, we develop a circularly polarized microwave antenna based on the excitation of hybrid electromagnetic modes in a high-permittivity dielectric resonator. The influence of the geometrical parameters of the antenna on the reflection coefficient and magnetic field magnitude is studied numerically and discussed. The Rabi frequencies and their inhomogeneity over the volume of a commercially available diamond sample are calculated. With respect to the numerical predictions, a Rabi frequency as high as 34 MHz with an inhomogeneity of 4% over a 1.2 mm Ɨ āˆ…2.5 mm (5.9 mm3 in volume) diamond sample can be achieved for 10 W of input power at room temperature. The antenna prototype is fabricated, and experimental investigations of its characteristics are performed in microwave and optical frequency domains. The circular polarization of the microwave magnetic field with an ellipticity of 0.94 is demonstrated experimentally. The Rabi oscillation frequency and its inhomogeneity are measured, and the results demonstrate a good agreement with the numerically predicted results.

Tech Support

Section titled ā€œTech Supportā€

Original Source

Section titled ā€œOriginal Sourceā€

References

Section titled ā€œReferencesā€
  1. 2016 - Optical magnetic detection of single-neuron action potentials using quantum defects in diamond [Crossref]
  2. 2015 - Fiber-optic control and thermometry of single-cell thermosensation logic [Crossref]
  3. 2018 - Nitrogen-vacancy ensemble magnetometry based on pump absorption [Crossref]
  4. 2015 - Subpicotesla diamond magnetometry [Crossref]
  5. 2009 - Diamonds with a high density of nitrogen-vacancy centers for magnetometry applications [Crossref]
  6. 2013 - Suppression of electron spin decoherence of the diamond NV center by a transverse magnetic field [Crossref]
  7. 2018 - Broadband loop gap resonator for nitrogen vacancy centers in diamond [Crossref]
  8. 2018 - 3D uniform manipulation of NV centers in diamond using a dielectric resonator antenna [Crossref]
  9. 2012 - Enhanced metrology using preferential orientation of nitrogen-vacancy centers in diamond [Crossref]
  10. 2019 - Engineering preferentially-aligned nitrogen-vacancy centre ensembles in CVD grown diamond [Crossref]

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