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Suppression of the optical linewidth and spin decoherence of a quantum spin center in a <i>p–n</i> diode

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Abstract

We present a quantitative theory of the suppression of the optical linewidth due to charge fluctuation noise in a p–n diode [1], recently observed in Ref. 2. We connect the local electric field with the voltage across the diode, allowing for the identification of the defect depth from the experimental threshold voltage. Furthermore, we show that an accurate description of the decoherence of such spin centers requires a complete spin–1 formalism that yields a bi-exponential decoherence process, and predict how reduced charge fluctuation noise suppresses the spin center's decoherence rate.

[1] Denis R. Candido and Michael E. Flatté, arXiv:2008.13289.
[2] C. P. Anderson, A. Bourassa et al., Science 366, 1225 (2019).

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Presenters

  • Denis R Candido

    Department of Physics and Astronomy, University of Iowa, University of Iowa, Univ of Iowa

Authors

  • Denis R Candido

    Department of Physics and Astronomy, University of Iowa, University of Iowa, Univ of Iowa

  • Michael Flatté

    Department of Physics and Astronomy, The University of Iowa, University of Iowa, Department of Physics, University of Iowa, Physics and Astronomy, Univ of Iowa, Department of Physics and Astronomy, University of Iowa, Department of Applied Physics, Eindhoven University of Technology, Department of Physics, University of Iowa; Department of Applied Physics, Eindhoven University of Technology, Univ. of Iowa/Eindoven University of Technology, Department of Physics and Astronomy, University of Iowa, Univ of Iowa