Phase-space approach to the study of decoherence in quantum walks
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 syste...
Guardado en:
| Autores principales: | , |
|---|---|
| Formato: | JOUR |
| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_10502947_v68_n5_p9_Lopez |
| Aporte de: |
| id |
todo:paper_10502947_v68_n5_p9_Lopez |
|---|---|
| record_format |
dspace |
| spelling |
todo:paper_10502947_v68_n5_p9_Lopez2023-10-03T15:59:35Z Phase-space approach to the study of decoherence in quantum walks López, C.C. Paz, J.P. 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. © 2003 The American Physical Society. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_10502947_v68_n5_p9_Lopez |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| description |
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. © 2003 The American Physical Society. |
| format |
JOUR |
| author |
López, C.C. Paz, J.P. |
| spellingShingle |
López, C.C. Paz, J.P. Phase-space approach to the study of decoherence in quantum walks |
| author_facet |
López, C.C. Paz, J.P. |
| author_sort |
López, C.C. |
| title |
Phase-space approach to the study of decoherence in quantum walks |
| title_short |
Phase-space approach to the study of decoherence in quantum walks |
| title_full |
Phase-space approach to the study of decoherence in quantum walks |
| title_fullStr |
Phase-space approach to the study of decoherence in quantum walks |
| title_full_unstemmed |
Phase-space approach to the study of decoherence in quantum walks |
| title_sort |
phase-space approach to the study of decoherence in quantum walks |
| url |
http://hdl.handle.net/20.500.12110/paper_10502947_v68_n5_p9_Lopez |
| work_keys_str_mv |
AT lopezcc phasespaceapproachtothestudyofdecoherenceinquantumwalks AT pazjp phasespaceapproachtothestudyofdecoherenceinquantumwalks |
| _version_ |
1782024502511665152 |