Understanding Central Spin Decoherence Due to Interacting Dissipative Spin Baths.
Phys Rev Lett
; 132(25): 250401, 2024 Jun 21.
Article
em En
| MEDLINE
| ID: mdl-38996232
ABSTRACT
We propose a new approach to simulate the decoherence of a central spin coupled to an interacting dissipative spin bath with cluster-correlation expansion techniques. We benchmark the approach on generic 1D and 2D spin baths and find excellent agreement with numerically exact simulations. Our calculations show a complex interplay between dissipation and coherent spin exchange, leading to increased central spin coherence in the presence of fast dissipation. Finally, we model near-surface nitrogen-vacancy centers in diamond and show that accounting for bath dissipation is crucial to understanding their decoherence. Our method can be applied to a variety of systems and provides a powerful tool to investigate spin dynamics in dissipative environments.
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MEDLINE
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En
Ano de publicação:
2024
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Article