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Quantum information spreading in a disordered quantum walk

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arxiv 2010.10592 v1 pith:6ZIZIWUI submitted 2020-10-20 quant-ph

classification quant-ph
keywords quantuminformationwalkclassicalinvestigatespreadingalthoughanderson
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We design a quantum probing protocol using Quantum Walks to investigate the Quantum Information spreading pattern. We employ Quantum Fisher Information, as a figure of merit, to quantify extractable information about an unknown parameter encoded within the Quantum Walk evolution. Although the approach is universal, we focus on the coherent static and dynamic disorder to investigate anomalous and classical transport as well as Anderson localization. Our results show that a Quantum Walk can be considered as a readout device of information about defects and perturbations occurring in complex networks, both classical and quantum.

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Cited by 1 Pith paper

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Noisy Cyclic Quantum Random Walk

    quant-ph 2024-11 conditional novelty 6.0 of 10

    In a noisy cyclic quantum walk, the eigenstate participation ratio correlates with spreading: below a numerically located noise strength near pi/3 the walker spreads, above it the walker localizes.

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