Gate controlled resonant widths in double-bend waveguides: Bound states\n in the continuum

2015/01/08 by Almas F. Sadreev, Sadreev, Almas F., Дмитрий Н. Максимов +3
Engineering · Physics and Astronomy · #FOS: Physical sciences #Mechanical and Optical Resonators #Mesoscale and Nanoscale Physics (cond-mat.mes-hall) #Photonic and Optical Devices #Quantum Mechanics and Non-Hermitian Physics

paper · pdf · doi:10.48550/arxiv.1501.02037

openalex publication_date 2015/01/08 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We consider quantum transmission through double-bend \Π- and Z-shaped\nwaveguides controlled by the finger gate potential. Using the effective\nnon-Hermitian Hamiltonian approach we explain the resonances in transmission.\nWe show a difference in transmission in the short waveguides that is the result\nof different chirality in Z and \Π waveguides. We show that the potential\nselectively affects the resonant widths resulting in the occurrence of bound\nstates in the continuum.\n

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