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dc.contributor.author
Lopez, Cecilia Carolina  
dc.contributor.author
Paz, Juan Pablo  
dc.date.available
2019-03-19T15:24:00Z  
dc.date.issued
2003-11  
dc.identifier.citation
Lopez, Cecilia Carolina; Paz, Juan Pablo; Phase-space approach to the study of decoherence in quantum walks; American Physical Society; Physical Review A: Atomic, Molecular and Optical Physics; 68; 5; 11-2003; 1-9; 52305  
dc.identifier.issn
1050-2947  
dc.identifier.uri
http://hdl.handle.net/11336/71992  
dc.description.abstract
We analyze the quantum walk on a cycle using discrete Wigner functions as a way to represent the states and the evolution of the walker. The method provides some insight on the nature of the interference effects that make quantum and classical walks different. We also study the behavior of the system when the quantum coin carried by the walker interacts with an environment. We show that for this system quantum coherence is robust for initially delocalized states of the walker. The use of phase-space representation enables us to develop an intuitive description of the nature of the decoherence process in this system.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
American Physical Society  
dc.rights
info:eu-repo/semantics/openAccess  
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/  
dc.subject
Decoherence  
dc.subject
Quantum Walks  
dc.subject
Phase Space  
dc.subject.classification
Astronomía  
dc.subject.classification
Ciencias Físicas  
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS  
dc.title
Phase-space approach to the study of decoherence in quantum walks  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2019-03-19T13:43:50Z  
dc.journal.volume
68  
dc.journal.number
5  
dc.journal.pagination
1-9; 52305  
dc.journal.pais
Estados Unidos  
dc.journal.ciudad
Nueva York  
dc.description.fil
Fil: Lopez, Cecilia Carolina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Física; Argentina  
dc.description.fil
Fil: Paz, Juan Pablo. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; Argentina. Los Alamos National High Magnetic Field Laboratory; Estados Unidos  
dc.journal.title
Physical Review A: Atomic, Molecular and Optical Physics  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://journals.aps.org/pra/abstract/10.1103/PhysRevA.68.052305  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://arxiv.org/abs/quant-ph/0308104  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1103/PhysRevA.68.052305