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Creutz ladder in a resonantly shaken 1D optical lattice
Authors
Jeong Ho Han
Jin Hyoun Kang
Yong il Shin
Publication date
1 January 2020
Publisher
IOP PUBLISHING LTD
Abstract
We report the experimental realization of a Creutz ladder for ultracold fermionic atoms in a resonantly driven 1D optical lattice. The two-leg ladder consists of the two lowest orbital states of the optical lattice and the cross inter-leg links are generated via two-photon resonant coupling between the orbitals by periodic lattice shaking. The characteristic pseudo-spin winding structure in the energy bands of the ladder system is demonstrated using momentum-resolved Ramsey-type interferometric measurements. We discuss a two-tone driving method to extend the inter-leg link control and propose a topological charge pumping scheme for the Creutz ladder system. ©2020 The Author(s). Published by IOP Publishing Ltd on behalf of the Institute of Physics and Deutsche Physikalische Gesellschaf
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oai:pr.ibs.re.kr:8788114/7057
Last time updated on 25/03/2020