Affiliation:
1. Shanghai Jiao Tong University
2. Stanford University
3. Texas A&M University
4. Shanghai Research Center for Quantum Sciences
5. Jinan Institute of Quantum Technology
6. Shandong Normal University
Abstract
The dimensionality of a physical system is one of the major parameters defining its physical properties. The recently introduced concept of synthetic dimension has made it possible to arbitrarily manipulate the system of interest and harness light propagation in different ways. It also facilitates the transformative architecture of system-on-a-chip devices enabling far reaching applications such as optical isolation. In this report, a novel architecture based on dynamically-modulated waveguide arrays with the Su-Schrieffer-Heeger configuration in the spatial dimension is proposed and investigated with an eye on a practical implementation. The propagation of light through the one-dimensional waveguide arrays mimics time evolution of the field in a synthetic two-dimensional lattice. The addition of the effective gauge potential leads to an exotic topologically protected one-way transmission along adjacent boundary. A cosine-shape isolated band, which supports the topological Bloch oscillation in the frequency dimension under the effective constant force, appears and is localized at the spatial boundary being robust against small perturbations. This work paves the way to improved light transmission capabilities under topological protections in both spatial and spectral regimes and provides a novel platform based on a technologically feasible lithium niobate platform for optical computing and communication.
Funder
National Natural Science Foundation of China
National Key Research and Development Program of China
Shanghai Municipal Science and Technology Major Project
Natural Science Foundation of Shanghai
National Science Foundation
Air Force Office of Scientific Research
National Institutes of Health
Cancer Prevention and Research Institute of Texas
Subject
Atomic and Molecular Physics, and Optics
Cited by
2 articles.
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