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Trapped Ion Quantum Computing Quantum Simulation

Understanding central spin decoherence due to interacting dissipative spin baths

arXiv
Authors: Mykyta Onizhuk, Yu-Xin Wang, Jonah Nagura, Aashish A. Clerk, Giulia Galli

Year

2023

Paper ID

6321

Status

Preprint

Abstract Read

~2 min

Abstract Words

110

Citations

N/A

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 NV 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.

Why This Paper Matters

  • This paper contributes to the Quantum Simulation research area in the Quantum Articles archive.
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  • 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.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:2312.01205 [2] arXiv https://arxiv.org/abs/2312.01205 [3] Publisher https://arxiv.org/abs/2312.01205

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