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Trapped Ion Quantum Computing

Quantum information spreading in inhomogeneous spin ensembles

arXiv
Authors: Rahul Gupta, Florian Mintert, Himadri Shekhar Dhar

Year

2026

Paper ID

48758

Status

Preprint

Abstract Read

~2 min

Abstract Words

106

Citations

0

Abstract

We present a Krylov space based theoretical framework for modeling inhomogeneous spin ensembles with arbitrary distributions of spin frequencies and couplings. The framework is then used to asymptotically large spin ensemble. In the single-excitation subspace, the Krylov construction allows for to derive exact expressions for the Lieb-Robinson velocity and quantum speed limit, and figure of merit such as Krylov complexity. Our work reveals a strong dependence of the speed of information flow on the statistical distribution of resonance frequencies in the spin ensemble with immediate implications for the design of components for quantum technologies, realized for example with nitrogen vacancy centers, nuclear spins or ultracold atoms.

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  • This paper contributes to the Trapped-Ion Quantum Computing research area in the Quantum Articles archive.
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  • We present a Krylov space based theoretical framework for modeling inhomogeneous spin ensembles with arbitrary distributions of spin frequencies and couplings.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:2604.13923 [2] arXiv https://arxiv.org/abs/2604.13923 [3] Publisher https://arxiv.org/abs/2604.13923

Local Citation Graph (Related-Paper Links)

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External citation index: OpenAlex citation signal • updated 2026-06-24 02:45:56

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