Realization of Hofstadter's butterfly and a one-way edge mode in a polaritonic system
Sign Up to like & getrecommendations! Published in 2018 at "Physical Review B"
DOI: 10.1103/physrevb.98.075412
Abstract: We present a scheme to generate an artificial gauge field for the system of neutral bosons, represented by polaritons in micropillars arranged into a square lattice. The splitting between the two polarizations of the micropillars… read more here.
Keywords: mode; system; hofstadter butterfly; edge ... See more keywords
Fractional Disclination Charge and Discrete Shift in the Hofstadter Butterfly.
Sign Up to like & getrecommendations! Published in 2022 at "Physical review letters"
DOI: 10.1103/physrevlett.129.275301
Abstract: In the presence of crystalline symmetries, topological phases of matter acquire a host of invariants leading to nontrivial quantized responses. Here we study a particular invariant, the discrete shift 𝒮, for the square lattice Hofstadter… read more here.
Keywords: disclination; discrete shift; charge; hofstadter ... See more keywords
Generation of Hofstadter's butterfly spectrum using circular arrays of microring resonators.
Sign Up to like & getrecommendations! Published in 2020 at "Optics letters"
DOI: 10.1364/ol.384552
Abstract: Hofstadter's butterfly spectrum, which characterizes the energy bands of electrons in a 2D lattice under a perpendicular magnetic field, has been emulated and experimentally characterized in periodic bandgap structures at microwave and acoustic frequencies. However,… read more here.
Keywords: optics; hofstadter butterfly; butterfly spectrum;