Preprint
Interplay between charge and spin noise in the near-surface theory of decoherence and relaxation of $C_{3v}$ symmetry qutrit spin-1 centers
ArXiv.org
03/23/2023
DOI: 10.48550/arxiv.2303.13370
Abstract
Decoherence and relaxation of solid-state defect qutrits near a crystal
surface, where they are commonly used as quantum sensors, originates from
charge and magnetic field noise. A complete theory requires a formalism for
decoherence and relaxation that includes all Hamiltonian terms allowed by the
defect's point-group symmetry. This formalism, presented here for the $C_{3v}$
symmetry of a spin-1 defect in a diamond, silicon cardide, or similar host,
relies on a Lindblad dynamical equation and clarifies the relative
contributions of charge and spin noise to relaxation and decoherence, along
with their dependence on the defect spin's depth and resonant frequencies. The
calculations agree with the experimental measurements of Sangtawesin
$\textit{et al.}$, Phys. Rev. X $\textbf{9}$, 031052 (2019) and point to an
unexpected importance of charge noise.
Details
- Title: Subtitle
- Interplay between charge and spin noise in the near-surface theory of decoherence and relaxation of $C_{3v}$ symmetry qutrit spin-1 centers
- Creators
- Denis R CandidoMichael E Flatté
- Resource Type
- Preprint
- Publication Details
- ArXiv.org
- DOI
- 10.48550/arxiv.2303.13370
- ISSN
- 2331-8422
- Language
- English
- Date posted
- 03/23/2023
- Academic Unit
- Physics and Astronomy; Electrical and Computer Engineering
- Record Identifier
- 9984442214002771
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