Topological transitions in continuously deformed photonic crystals
نویسندگان
چکیده
منابع مشابه
Topological transitions in continuously-deformed photonic crystals
We demonstrate that multiple topological transitions that occur, with high-sensitivity, by continuous change in geometry of a simple 2D dielectric-frame photonic crystal consisting of circular air-holes. These transitions are characterized by the switch between the frequencies of the pand d-orbital Bloch modes encompassing the photonic band gap (PBG). By tuning the radii of the holes and/or the...
متن کاملInterband transitions in photonic crystals
We present a formalism to describe transitions between photon modes in a photonic crystal with a temporally and spatially varying dielectric constant, in analogy to optical transitions between electronic states in metals and semiconductors. Resonant transitions between different photonic bands are discussed, and predictions of the theory are compared to electromagnetic simulations. We contrast ...
متن کاملPhase spectroscopy of topological invariants in photonic crystals
A. V. Poshakinskiy,1,* A. N. Poddubny,1 and M. Hafezi2,3 1Ioffe Institute, St. Petersburg 194021, Russia 2Joint Quantum Institute, NIST/University of Maryland, College Park, Maryland 20742, USA 3Department of Electrical Engineering and Institute for Research in Electronics and Applied Physics, University of Maryland, College Park, Maryland 20742, USA (Received 29 January 2015; published 20 Apri...
متن کاملRadiative topological states in one-dimensional resonant photonic crystals
We present a theory of topological edge states in onedimensional resonant photonic crystals with compound unit cell. We demonstrate how the structure, despite being onedimensional, can be characterized by topological indices. Contrary to conventional electronic topological states the modes under consideration are radiative, i.e., they decay in time due to the light escape through the structure ...
متن کاملObservation of topological phase transitions in photonic quasicrystals.
Topological insulators and topological superconductors are distinguished by their bulk phase transitions and gapless states at a sharp boundary with the vacuum. Quasicrystals have recently been found to be topologically nontrivial. In quasicrystals, the bulk phase transitions occur in the same manner as standard topological materials, but their boundary phenomena are more subtle. In this Letter...
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: Physical Review B
سال: 2018
ISSN: 2469-9950,2469-9969
DOI: 10.1103/physrevb.97.085148