Edge-to-edge topological spectral transfer in diamond photonic lattices
نویسندگان
چکیده
The transfer of information between topological edge states is a robust way spatially manipulating spatial in lattice environments. This method particularly efficient when the modes are kept within gap during transfer. In this work, we show experimentally photonic located at opposite ends dimerized one-dimensional lattice. We use diamond coupled waveguides and that insensitive to presence high density form flat band an energy close prevails hopping impurity. explore dynamics waveguide using wavelength-scan method, where different input wavelengths translate into effective lengths. Our results offer alternative implementation protocols based on active driving mechanisms.
منابع مشابه
Edge-decomposition of topological indices
The topological indices, defined as the sum of contributions of all pairs of vertices (among which are the Wiener, Harary, hyper–Wiener indices, degree distance, and many others), are expressed in terms of contributions of edges and pairs of edges.
متن کاملAmplitude-dependent topological edge states in nonlinear phononic lattices
This work investigates the effect of nonlinearities on topologically protected edge states in one and two-dimensional phononic lattices. We first show that localized modes arise at the interface between two spring-mass chains that are inverted copies of each other. Explicit expressions derived for the frequencies of the localized modes guide the study of the effect of cubic nonlinearities on th...
متن کاملedge-decomposition of topological indices
the topological indices, defined as the sum of contributions of all pairs of vertices (among which are the wiener, harary, hyper–wiener indices, degree distance, and many others), are expressed in terms of contributions of edges and pairs of edges.
متن کاملOptical isolation in topological-edge-state photonic arrays.
We introduce a new type of optical isolator based on breaking time reversal symmetry in dissipative finite Su-Schrieffer-Heeger (SSH) waveguide arrays that support topological edge states at one end of the structure. In the forward propagation direction, light is launched into the edge waveguide to excite the localized topological midgap state. As a result, most of the input optical power is tr...
متن کاملMeasuring topological invariants in small photonic lattices
We present a robust practical scheme for measuring the topological invariants of non-interacting tight-binding models realized in arrays of coupled photonic cavities. More specifically, we aim to focus on the implementation of a single unit cell with tunable twisted boundary conditions in order to access the bulk topological properties of much larger systems experimentally. We illustrate our me...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: APL photonics
سال: 2023
ISSN: ['2378-0967']
DOI: https://doi.org/10.1063/5.0153770