Optical analogue of population trapping in the continuum: classical and quantum interference effects

Abstract

A quantum theory of light propagation in two optical channel waveguides tunnelling-coupled to a common continuum of modes (such as those of a slab waveguide) is presented, and classical and quantum interference effects are investigated. For classical light, the photonic system realizes an optical analogue of coherent population trapping in the continuum encountered in atomic physics, where destructive interference between different light leakage channels leads to the appearance of a trapped state embedded in the continuum. For nonclassical light, two-photon interference effects are predicted, such as the tendency of photon pairs to bunch when decaying into the continuum.

12 pages, 2 figures

References in corpus (5)

• Silica-on-Silicon Waveguide Quantum Circuits
• Engineering Fano resonances in discrete networks
• Transport and Quantum Walk of Nonclassical Light in Coupled Waveguides
• Ghost imaging using homodyne detection
• Propagation of temporal entanglement

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