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Title: Classical-like behavior in quantum walks with inhomogeneous, time-dependent coin operators
Author: Montero Torralbo, Miquel
Keywords: Rutes aleatòries (Matemàtica)
Física matemàtica
Partícules (Física nuclear)
Random walks (Mathematics)
Mathematical physics
Particles (Nuclear physics)
Issue Date: 15-Jun-2016
Publisher: American Physical Society
Abstract: Although quantum walks exhibit peculiar properties that distinguish them from random walks, classical behavior can be recovered in the asymptotic limit by destroying the coherence of the pure state associated to the quantum system. Here I show that this is not the only way: I introduce a quantum walk driven by an inhomogeneous, time-dependent coin operator, which mimics the statistical properties of a random walk at all time scales. The quantum particle undergoes unitary evolution and, in fact, the high correlation evidenced by the components of the wave function can be used to revert the outcome of an accidental measurement of its chirality.
Note: Reproducció del document publicat a:
It is part of: Physical Review A, 2016, vol. 93, num. 6, p. 062316-062316
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ISSN: 1050-2947
Appears in Collections:Articles publicats en revistes (Física de la Matèria Condensada)

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