期刊
PHYSICAL REVIEW LETTERS
卷 125, 期 18, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.125.186804
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资金
- French Agence Nationale de la Recherche (ANR) under grant Topo-Dyn [ANR-14-ACHN-0031]
- Labex CEMPI [ANR-11-LABX-0007]
- CPER Photonics for Society P4S
- I-Site ULNE project NONTOP
- Metropole Europeenne de Lille (project TFlight)
- European Research Council (ERC) under the European Unions Horizon 2020 research and innovation programme [865151]
- European Research Council (ERC) [865151] Funding Source: European Research Council (ERC)
We report new oscillations of wave packets in quantum walks subjected to electric fields, that decorate the usual Bloch-Zener oscillations of insulators. The number of turning points (or suboscillations) within one Bloch period of these oscillations is found to be governed by the winding of the quasienergy spectrum. Thus, this provides a new physical manifestation of a topological property of periodically driven systems that can be probed experimentally. Our model, based on an oriented scattering network, is readily implementable in photonic and cold atomic setups.
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