Experimental Observation of Aharonov-Bohm Cages in Photonic Lattices

Physical Review Letters
Sebabrata MukherjeeNathan Goldman

Abstract

We report on the experimental realization of a uniform synthetic magnetic flux and the observation of Aharonov-Bohm cages in photonic lattices. Considering a rhombic array of optical waveguides, we engineer modulation-assisted tunneling processes that effectively produce nonzero magnetic flux per plaquette. This synthetic magnetic field for light can be tuned at will by varying the phase of the modulation. In the regime where half a flux quantum is realized in each plaquette, all the energy bands dramatically collapse into nondispersive (flat) bands and all eigenstates are completely localized. We demonstrate this Aharonov-Bohm caging by studying the propagation of light in the bulk of the photonic lattice. Besides, we explore the dynamics on the edge of the lattice and discuss how the corresponding edge states can be continuously connected to the topological edge states of the Creutz ladder. Our photonic lattice constitutes an appealing platform where the interplay between engineered gauge fields, frustration, localization, and topological properties can be finely studied.

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Citations

Jan 16, 2019·Optics Letters·Stefano Longhi
May 6, 2019·Physical Review Letters·Diego Porras, Samuel Fernández-Lorenzo
Dec 7, 2019·Physical Review Letters·Philip KieferTobias Schaetz
Mar 7, 2019·Scientific Reports·Artem V PankovAndrey A Sukhorukov
Sep 10, 2020·Light, Science & Applications·Christina JörgVerònica Ahufinger
Sep 30, 2020·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Amrita MukherjeeArunava Chakrabarti
Nov 25, 2020·Nature Communications·M Di LibertoG Palumbo
Mar 31, 2021·Physical Review Letters·Yanyan HeDa-Wei Wang
Jun 16, 2021·Optics Letters·Stefano Longhi
Jul 31, 2021·Physical Review Letters·Xiao-Tong LuHong Chang
Aug 24, 2021·Physical Review Letters·Diego Guzmán-SilvaRodrigo A Vicencio
Aug 29, 2021·Light, Science & Applications·Christina JörgVerònica Ahufinger

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