Decoherence in the three-state quantum walk

Luísa Toledo Tude and Marcos César de Oliveira

Physica A: Statistical Mechanics and its Applications, 2022, vol. 605, issue C

Abstract: Quantum walks are dynamic systems with a wide range of applications in quantum computation and quantum simulation of analog systems, therefore it is of common interest to understand what changes from an isolated process to one embedded in an environment. In the present work, we analyze the decoherence in a three-state uni-dimensional quantum walk. The approaches taken into consideration to account for the environment effects are phase and amplitude damping Kraus operators, unitary noise on the coin space, and broken links. The results are compared with the two-state quantum walk.

Keywords: Quantum walks; Localization; Quantum noise; Broken links (search for similar items in EconPapers)
Date: 2022
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:605:y:2022:i:c:s0378437122006367

DOI: 10.1016/j.physa.2022.128012

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