Xinyuan Qi


Supervisor of Doctorate Candidates

Supervisor of Master's Candidates


Administrative Position:Professor

Business Address:School of Physics, Northwest University,#1 Xuefu Avenue, Chang'an District, Xi'an, Shaanxi Province, China


Academic Titles:Deputy Director, Department of Optoelectronic Information Science

Other Post:Deputy Secretary General of Xi'an Society of Laser & Infrared

Discipline:Other specialties in Optical Engineering

Paper Publications

Current position: QI Xinyuan > Paper Publications

Anti-parity-time topologically undefined state

Release time:2022-09-05 Hits:

Impact Factor0.0

DOI number:10.1088/1367-2630/ac4052

Journal:New Journal of Physics

Key Words:undefined winding number, topological photonics, anti-parity-time symmetry

Abstract:Researches on the topological edge state in the photonic lattice are attracting considerable attention. Here, we report the studies on a particular state for which the topological invariant is undefined. We constructed an anti-parity-time-symmetric photonic lattice by using the perturbation method. Light distributes only in the wide waveguides with equal magnitude for the state with undefined winding numbers. Further studies show that the equal intensity transmission is unaffected except for the defect site. Our work provides a new way to study the topological state and the equally divided light transmission and might be applicable in optical circuits and optical interconnect.

Indexed by:Journal paper

Discipline:Natural Science

First-Level Discipline:Physics


Page Number:123039

Translation or Not:no

Date of Publication:2021-12-22

Included Journals:SCI

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