Interplay between charge and spin noise in the near-surface theory of decoherence and relaxation of C3v symmetry qutrit spin-1 centers
At a Glance
Section titled âAt a Glanceâ| Metadata | Details |
|---|---|
| Publication Date | 2024-07-15 |
| Journal | Physical review. B./Physical review. B |
| Authors | Denis R. Candido, Michael E. Flatté |
| Institutions | Eindhoven University of Technology, University of Iowa |
| Citations | 6 |
Abstract
Section titled âAbstractâDecoherence and relaxation of solid-state defect qutrits near a crystal surface, where they are commonly used as quantum sensors, originate from charge and magnetic field noise. A complete theory requires a formalism for decoherence and relaxation that includes all Hamiltonian terms allowed by the defectâs point-group symmetry. This formalism, presented here for the <a:math xmlns:a=âhttp://www.w3.org/1998/Math/MathMLâ><a:msub><a:mi>C</a:mi><a:mrow><a:mn>3</a:mn><a:mi>v</a:mi></a:mrow></a:msub></a:math> symmetry of a spin-1 defect in a diamond, silicon carbide, 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 spinâs depth and resonant frequencies. The calculations agree with the experimental measurements of Sangtawesin [], and corroborate the importance of charge noise. Published by the American Physical Society 2024