Longitudinal spin relaxation model applied to point defect qubit systems

Abstract

Controllable, partially isolated few level systems in semiconductors have recently gained multidisciplinary attention due to their widespread nanoscale sensing and quantum technology applications. Quantitative simulation of the dynamics and related applications of such systems is a challenging theoretical task that requires faithful description not only the few level systems but also their local environments. Here, we develop a method that can describe relevant relaxation processes induced by a dilute bath of nuclear and electron spins. The method utilizes an extended Lindblad equation in the framework of cluster approximation of a central spin system. We demonstrate that the proposed method can accurately describe T${}_1$ time of an exemplary solid-state point defect qubit system, in particular NV center in diamond, at various magnetic fields and strain.

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• High fidelity bi-directional nuclear qubit initialization in SiC
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Cited by in corpus (12)

• Coherent dynamics of multi-spin ${\mathrm{V}}_{\mathrm{B}}^{-}$ centers in hexagonal boron nitride
• Probing the coherence of solid-state qubits at avoided crossings
• Photoluminescence at the ground state level anticrossing of the nitrogen-vacancy center in diamond
• Cross-relaxation studies with optically detected magnetic resonances in nitrogen-vacancy centers in diamond in an external magnetic field
• Decoherence of Nuclear Spins in the Proximity of Nitrogen Vacancy Centers in Diamond
• Performance of quantum registers in diamond in the presence of spin impurities
• Level-crossing induced spin phenomena in SiC: a theoretical study
• Low-field microwave-free sensors using dipolar spin relaxation of quartet spin states in silicon carbide
• First-principles computational methods for quantum defects in two-dimensional materials: A perspective
• Effect of quantum coherence on Landauer's principle
• Nuclear spin relaxation in solid state defect quantum bits via electron-phonon coupling in their optical excited state
• Nuclear Spin-Mediated Relaxation Mechanisms of the V${}_B^{-}$ Center in hBN