Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/53408
Type: Artigo de periódico
Title: Measurement of superluminal optical tunneling times in double-barrier photonic band gaps
Author: Longhi, S
Laporta, P
Belmonte, M
Recami, E
Abstract: Tunneling of optical pulses at 1.5 mum wavelength through double-barrier periodic fiber Bragg gratings is experimentally investigated in this paper. Tunneling time measurements as a function of the barrier distance show that, far from resonances of the structure, the transit time is paradoxically short-implying superluminal propagation-and almost independent of the barrier distance. This result is in agreement with theoretical predictions based on phase-time analysis and provides, in the optical context, an experimental evidence of the analogous phenomenon in quantum mechanics of nonresonant superluminal tunneling of particles across two successive potential barriers.
Country: EUA
Editor: Amer Physical Soc
Rights: aberto
Identifier DOI: 10.1103/PhysRevE.65.046610
Date Issue: 2002
Appears in Collections:Unicamp - Artigos e Outros Documentos

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