Flat-Band Localization in Creutz Superradiance Lattices
- 8 March 2021
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 126 (10), 103601
- https://doi.org/10.1103/physrevlett.126.103601
Abstract
Flat bands play an important role in diffraction-free photonics and attract fundamental interest in many-body physics. Here we report the engineering of flat-band localization of collective excited states of atoms in Creutz superradiance lattices with tunable synthetic gauge fields. Magnitudes and phases of the lattice hopping coefficients can be independently tuned to control the state components of the flat band and the Aharonov-Bohm phases. We can selectively excite the flat band and control the flat-band localization with the synthetic gauge field. Our study provides a room-temperature platform for flat bands of atoms and holds promising applications in exploring correlated topological materials.Funding Information
- National Natural Science Foundation of China (11934011, 11874322, 91736209, U1330203, 12074431, 11774428)
- National Key Research and Development Program of China (2019YFA0308100, 2018YFA0307200)
- Fundamental Research Funds for the Central Universities
- Natural Science Foundation of Shanghai (19ZR1475700)
- Zhejiang Province Key Research and Development Program (2020C01019)
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