Resonance-antiresonance line shape for transmission in quantum waveguides with resonantly coupled cavities

Journal Article · Wed Sep 15 00:00:00 EDT 1993 · Physical Review, B: Condensed Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.48.8495· OSTI ID:6388587

Porod, W; Shao, Z; Lent, C S ^[1]

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1. Department of Electrical Engineering, University of Notre Dame, Notre Dame, Indiana 46556 (United States)

We investigate the line shape of the transmission probability in quantum waveguides with resonantly coupled cavities. Resonance and antiresonance features in the vicinity of each quasibound state can be characterized by a zero-pole pair in the complex-energy plane, which leads to asymmetrical transmission peaks. We have found a generalization of the familiar symmetrical Lorentzian line shape. Using several examples, we demonstrate the utility of our proposed line shape to extract the lifetime of the quasibound state by a fit to the data. We also discuss the asymmetrical line shapes in the context of Fano resonances.

• OSTI ID: 6388587
• Journal Information: Physical Review, B: Condensed Matter; (United States), Vol. 48:11; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
QUANTIZATION
BOUND STATE
CAVITIES
COUPLING
RESONANCE SCATTERING
TRANSMISSION
TUNNEL EFFECT
WAVEGUIDES
INELASTIC SCATTERING
SCATTERING
665400* - Quantum Physics Aspects of Condensed Matter- (1992-)
661100 - Classical & Quantum Mechanics- (1992-)