Superradiance transition in one-dimensional nanostructures: An effective non-Hermitian Hamiltonian formalism

Giuseppe Celardo, L. Kaplan

Risultato della ricerca: Contributo in rivistaArticolo in rivistapeer review

75 Citazioni (Scopus)

Abstract

Using an energy-independent non-Hermitian Hamiltonian approach to open systems, we fully describe transport through a sequence of potential barriers as external barriers are varied. Analyzing the complex eigenvalues of the non-Hermitian Hamiltonian model, a transition to a superradiant regime is shown to occur. Transport properties undergo a strong change at the superradiance transition, where the transmission is maximized and a drastic change in the structure of resonances is demonstrated. Finally, we analyze the effect of the superradiance transition in the Anderson localized regime.
Lingua originaleEnglish
pagine (da-a)155108-155117
Numero di pagine10
RivistaPHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS
Volume2009
Stato di pubblicazionePubblicato - 2009

Keywords

  • open quantum systems
  • quantum transport
  • superlattices

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