Artículo
Enhancement of quantum speed limit time due to cooperative effects in multilevel systems
Fecha de publicación:
08/2015
Editorial:
IOP Publishing
Revista:
Journal of Physics A: Mathematical and Theoretical
ISSN:
1751-8113
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Deriving minimum evolution times is of paramount importance in quantum mechanics. Bounds on the speed of evolution are given by the so called quantum speed limit (QSL). In this work we use quantum optimal control methods to study the QSL for driven many level systems which exhibit local two-level interactions in the form of avoided crossings (ACs). Remarkably, we find that optimal evolution times are proportionally smaller than those pre- dicted by the well-known two-level case, even when the ACs are isolated. We show that the physical mechanism for such enhancement is due to non-trivial cooperative effects between the AC and other levels, which are dynamically induced by the shape of the optimized control field.
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Articulos(IFIBA)
Articulos de INST.DE FISICA DE BUENOS AIRES
Articulos de INST.DE FISICA DE BUENOS AIRES
Citación
Poggi, Pablo Matías; Lombardo, Fernando Cesar; Wisniacki, Diego Ariel; Enhancement of quantum speed limit time due to cooperative effects in multilevel systems; IOP Publishing; Journal of Physics A: Mathematical and Theoretical; 48; 8-2015; 1-10
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