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Quantum State Geometry Fidelity

Fast state transfer via loop weights

arXiv
Authors: Gabor Lippner, Yujia Shi

Year

2026

Paper ID

3219

Status

Preprint

Abstract Read

~2 min

Abstract Words

47

Citations

N/A

Abstract

We prove that almost-linear-time high-fidelity state transfer is achievable in a quantum spin chain using loop weights at the second and second-to-last nodes. We provide specific parameter values, and using a careful analysis of the eigenvectors we make precise quantitative estimates of the transfer time and strength.

Why This Paper Matters

  • This paper contributes to the Quantum State Geometry & Fidelity research area in the Quantum Articles archive.
  • It adds a 2026 reference point for readers tracking recent quantum research.
  • We prove that almost-linear-time high-fidelity state transfer is achievable in a quantum spin chain using loop weights at the second and second-to-last nodes.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:2601.20237 [2] arXiv https://arxiv.org/abs/2601.20237 [3] Publisher https://arxiv.org/abs/2601.20237

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