Gate controlled resonant widths in double-bend waveguides: bound states in the continuum. (3rd July 2015)

• Record Type: Journal Article
• Authors: Sadreev, Almas F; Maksimov, Dmitrii N; Pilipchuk, Artem S
• Is Part Of: Journal of physics. Volume 27:Number 29(2015)
• Publication Date: 2015-07-03
• Subjects: double-bent waveguide -- effective non-Hermittian Hamiltonian -- bound states in the continuum; Condensed matter -- Periodicals; Matière condensée -- Périodiques; Vaste stoffen; Vloeistoffen; Natuurkunde; Electronic journals; Computer network resources; 530.4105
• DOI: 10.1088/0953-8984/27/29/295303
• Languages: English
• ISSNs: 0953-8984

Abstract

Abstract: We consider quantum transmission through double-bend - and Z -shaped waveguides controlled by the finger gate potential. Using the effective non-Hermitian Hamiltonian approach we explain the resonances in transmission. We show a difference in transmission in the short waveguides that is the result of different chirality in Z and waveguides. We demonstrate that the potential selectively affects the resonant widths resulting in the occurrence of bound states in the continuum.