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Quantum Simulation

Catalytic Tomography of Ground States

arXiv
Authors: Chi-Fang Chen, Robbie King

Year

2025

Paper ID

15857

Status

Preprint

Abstract Read

~2 min

Abstract Words

92

Citations

N/A

Abstract

We introduce a simple protocol for measuring properties of a gapped ground state with essentially no disturbance to the state. The required Hamiltonian evolution time scales inversely with the spectral gap and target precision (up to logarithmic factors), which is optimal. For local observables on geometrically local systems, the protocol only requires Hamiltonian evolution on a quasi-local patch of inverse-gap radius. Our results show that gapped ground states are algorithmically readable from a single copy without a recovery or rewinding procedure, which may drastically reduce tomography overhead in certain quantum simulation tasks.

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  • This paper contributes to the Quantum Simulation research area in the Quantum Articles archive.
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  • We introduce a simple protocol for measuring properties of a gapped ground state with essentially no disturbance to the state.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:2512.10247 [2] arXiv https://arxiv.org/abs/2512.10247 [3] Publisher https://arxiv.org/abs/2512.10247

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