Fengyu Liu

Fengyu Liu

Ph.D. student at Department of Electrical and Computer Engineering, University of Maryland

Localizing a Topological Mode Using a Near-Conservation of the Valley Degree of Freedom

Published in 2020 Conference on Lasers and Electro-Optics (CLEO), 2020

ABSTRACT: We demonstrate the energy localization at the end of an abruptly terminated topologically nontrivial waveguide. This localization relies on a near-conservation of the valley degree of freedom and does not require time-reversal symmetry breaking.