Quasiperiodic Floquet-Thouless Energy Pump
- 13 October 2021
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 127 (16), 166804
- https://doi.org/10.1103/physrevlett.127.166804
Abstract
We study a disordered one-dimensional fermionic system subject to quasiperiodic driving by two modes with incommensurate frequencies. We show that the system supports a topological phase in which energy is transferred between the two driving modes at a quantized rate. The phase is protected by a combination of disorder-induced spatial localization and frequency localization, a mechanism unique to quasiperiodically driven systems. We demonstrate that an analogue of the phase can be realized in a cavity-qubit system driven by two incommensurate modes.Funding Information
- National Science Foundation (DMR-1945529)
- Welch Foundation (AT-2036-20200401)
- Israel Science Foundation (1686/18)
- H2020 European Research Council (678862)
- Villum Fonden
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