Effect of spatial dimensionality on the spin-coherence decay in strongly-coupled spin baths
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2024-03-12 |
| Authors | Philip SchƤtzle, Walter Hahn |
| Institutions | Fraunhofer Institute for Applied Solid State Physics |
Abstract
Section titled āAbstractāFor quantum-technology applications, spin defects in solids are promising candidates but they are limited by their spin-coherence time. Hence, understanding the processes governing the spin-coherence decay is essential. We numerically calculate the spin-coherence time T2 of the NVācentre electron spin in diamond layers of different thickness in presence of a strongly-coupled disordered electron-spin bath. We show that the spin-coherence time in two-dimensional spin baths is longer than in three-dimensional spin baths. Furthermore, we obtain the corresponding stretched-exponential parameter, which also depends on the spatial dimensionality. We use the partitioning-based cluster-correlation expansion (pCCE) method, which partitions the bath into local subsystems and applies the clustion-correlation expansion method to these subsystems instead of individual spins, thereby offering a better numerical accuracy, especially in two-dimensional geometries.
Tech Support
Section titled āTech SupportāOriginal Source
Section titled āOriginal SourceāReferences
Section titled āReferencesā- 1961 - Principles of Nuclear Magnetism
- 2006 - Processing quantum information in diamond