Exciton-polaritonic quasicrystalline and aperiodic structures (Articolo in rivista)

Type
Label
  • Exciton-polaritonic quasicrystalline and aperiodic structures (Articolo in rivista) (literal)
Anno
  • 2009-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1103/PhysRevB.80.115314 (literal)
Alternative label
  • Poddubny A.N. (1); Pilozzi L. (2); Voronov M.M. (1); Ivchenko E.L. (1) (2009)
    Exciton-polaritonic quasicrystalline and aperiodic structures
    in Physical review. B, Condensed matter and materials physics
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Poddubny A.N. (1); Pilozzi L. (2); Voronov M.M. (1); Ivchenko E.L. (1) (literal)
Pagina inizio
  • 115314 (literal)
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  • http://link.aps.org/doi/10.1103/PhysRevB.80.115314 (literal)
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  • 80 (literal)
Rivista
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  • 13 (literal)
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  • 11 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • 1) A.F. Ioffe Physico-Technical Institute, 194021 St. Petersburg, Russia 2) Istituto dei Sistemi Complessi, CNR, CP 10, Monterotondo Stazione, Rome I-00016, Italy (literal)
Titolo
  • Exciton-polaritonic quasicrystalline and aperiodic structures (literal)
Abstract
  • We have theoretically studied propagation of exciton-polaritons in deterministic aperiodic multiple-quantum-well structures, particularly, in the Fibonacci and Thue-Morse chains. The attention is concentrated on the structures tuned to the resonant Bragg condition with two-dimensional quantum-well exciton. Depending on the number of wells, the super-radiant either photonic-quasicrystal regimes are realized in these aperiodic structures. For moderate values of the exciton nonradiative damping rate ?, the developed theory based on the two-wave approximation allows one to perceive and describe analytically the exact transfer-matrix computations for transmittance and reflectance spectra in the whole frequency range except for a narrow region near the exciton resonance ?0. In this region the optical spectra and the exciton-polariton dispersion demonstrate scaling invariance and self-similarity which can be interpreted in terms of the “band-edge” cycle of the trace map, in the case of Fibonacci structures, and in terms of zero reflection frequencies, in the case of Thue-Morse structures. With decreasing ?, in the whole allowed polariton band the two-wave approximation stops to be valid, and a transition occurs from Bloch-like to localized states, with modes closer to ?0 becoming localized first. (literal)
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