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Título: | A Study of Wigner Functions for Discrete-Time Quantum Walks |
Autor: | Pérez Cañellas, Armando CSIC ORCID; Bañuls Polo, M. Carmen; Hinarejos Doménech, Margarida CSIC | Palabras clave: | Quantum Walk Wigner Function Negativity |
Fecha de publicación: | 1-jul-2013 | Editor: | American Scientific Publishers | Citación: | Journal of Computational and Theoretical Nanoscience 10 (7): 1626-1633 (2013) | Resumen: | We perform a systematic study of the discrete time Quantum Walk on one dimension using Wigner functions, which are generalized to include the chirality (or coin) degree of freedom. In particular, we analyze the evolution of the negative volume in phase space, as a function of time, for different initial states. This negativity can be used to quantify the degree of departure of the system from a classical state. We also relate this quantity to the entanglement between the coin and walker subspaces. | URI: | http://hdl.handle.net/10261/124670 | DOI: | 10.1166/jctn.2013.3101 | ISSN: | 1546-1955 |
Aparece en las colecciones: | (IFIC) Artículos |
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Study of Wigner functions.pdf | 1,57 MB | Adobe PDF | Visualizar/Abrir |
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