Correlations, quantum entanglement and interference in nanoscopic systems

K. Hallberg, Julián Rincón, M. Nizama, A. A. Aligia, S. Ramasesha

Resultado de la investigación: Contribución a una revistaArtículorevisión exhaustiva

Resumen

Several of the most interesting quantum effects can or could be observed in nanoscopic systems. For example, the effect of strong correlations between electrons and of quantum interference can be measured in transport experiments through quantum dots, wires, individual molecules and rings formed by large molecules or arrays of quantum dots. In addition, quantum coherence and entanglement can be clearly observed in quantum corrals. In this paper we present calculations of transport properties through Aharonov-Bohm strongly correlated rings where the characteristic phenomenon of charge-spin separation is clearly observed. Additionally quantum interference effects show up in transport through π-conjugated annulene molecules producing important effects on the conductance for different source-drain configurations, leading to the possibility of an interesting switching effect. Finally, elliptic quantum corrals offer an ideal system to study quantum entanglement due to their focalizing properties. Because of an enhanced interaction between impurities localized at the foci, these systems also show interesting quantum dynamical behaviour and offer a challenging scenario for quantum information experiments.

Idioma originalInglés estadounidense
Número de artículoP11031
PublicaciónJournal of Statistical Mechanics: Theory and Experiment
Volumen2010
N.º11
DOI
EstadoPublicada - nov 2010
Publicado de forma externa

All Science Journal Classification (ASJC) codes

  • Física estadística y no lineal
  • Estadística y probabilidad
  • Estadística, probabilidad e incerteza

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