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Decoherence and disorder in quantum walks: From ballistic spread to localization

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arxiv 1101.2638 v1 pith:7LFFDOKA submitted 2011-01-13 quant-ph

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keywords quantumballisticspreadwalkdecoherencedisorderlocalizationalong
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We investigate the impact of decoherence and static disorder on the dynamics of quantum particles moving in a periodic lattice. Our experiment relies on the photonic implementation of a one-dimensional quantum walk. The pure quantum evolution is characterized by a ballistic spread of a photon's wave packet along 28 steps. By applying controlled time-dependent operations we simulate three different environmental influences on the system, resulting in a fast ballistic spread, a diffusive classical walk and the first Anderson localization in a discrete quantum walk architecture.

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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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