Coherent three-level mixing in an electronic quantum dot.

Payette, C; Yu, G; Gupta, J A; Austing, D G; Nair, S V; Partoens, B; Amaha, S; Tarucha, S

Payette, C; Yu, G; Gupta, J A; Austing, D G; Nair, S V; Partoens, B; Amaha, S; Tarucha, S.

Afiliación

Payette C; Institute for Microstructural Sciences M50, NRC, Montreal Road, Ottawa, Ontario, K1A 0R6, Canada.

Phys Rev Lett ; 102(2): 026808, 2009 Jan 16.

Article en En | MEDLINE | ID: mdl-19257308

RESUMEN

We observe magnetic-field-induced level mixing and quantum superposition phenomena between three approaching single-particle states in a quantum dot probed via the ground state of an adjacent quantum dot by single-electron resonant tunneling. The mixing is attributed to anisotropy and anharmonicity in realistic dot confining potentials. The pronounced anticrossing and transfer of strengths (both enhancement and suppression) between resonances can be understood with a simple coherent level mixing model. Superposition can lead to the formation of a dark state by complete cancellation of an otherwise strong resonance, an effect resembling coherent population trapping in a three-level-system of quantum and atom optics.

Buscar en Google

Añadir a Mi BVS

Imprimir

XML

PubMed Links

Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Phys Rev Lett Año: 2009 Tipo del documento: Article País de afiliación: Canadá Pais de publicación: Estados Unidos

Buscar en Google

Añadir a Mi BVS

Imprimir

XML

PubMed Links