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Longitudinal spin relaxation model applied to point-defect qubit systems
Linköping University, Department of Physics, Chemistry and Biology, Theoretical Physics. Linköping University, Faculty of Science & Engineering. Wigner Res Ctr Phys, Hungary.ORCID iD: 0000-0003-0111-5101
2020 (English)In: Physical Review B, ISSN 2469-9950, E-ISSN 2469-9969, Vol. 101, no 15, article id 155203Article in journal (Refereed) Published
Abstract [en]

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 of 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, the nitrogen-vacancy (NV) center in diamond, at various magnetic fields and strain.

Place, publisher, year, edition, pages
AMER PHYSICAL SOC , 2020. Vol. 101, no 15, article id 155203
National Category
Condensed Matter Physics
Identifiers
URN: urn:nbn:se:liu:diva-165472DOI: 10.1103/PhysRevB.101.155203ISI: 000526523200002OAI: oai:DiVA.org:liu-165472DiVA, id: diva2:1428595
Note

Funding Agencies|MTA Premium Postdoctoral Research Program; Knut and Alice Wallenberg Foundation through WBSQD2 project [2018.0071]; Hungarian NKFIH Grant of the National Excellence Program of Quantum-coherent materials project [KKP129866]; NKFIH through the National Quantum Technology Program [2017-1.2.1-NKP-2017-00001]; EU QuantERA Q_magine project (NKFIH Grant) [127889]

Available from: 2020-05-06 Created: 2020-05-06 Last updated: 2024-01-10

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CiteExportLink to record
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Citation style
  • apa
  • ieee
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  • de-DE
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