Journal
PHYSICAL REVIEW X
Volume 5, Issue 4, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevX.5.041050
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Funding
- Swiss National Science Foundation (SNSF)
- Villum Foundation
- People Programme (Marie Curie Actions) of the European Union [GA2013-627838, 631696]
- Israel-U.S. Binational Science Foundation
- I-Core
- Israeli Excellence Center
- NSF [DMR-1410435]
- Institute of Quantum Information and Matter
- NSF Frontier center - Gordon and Betty Moore Foundation
- Packard Foundation
- NSF Graduate Research Fellowship Program
- Villum Fonden [00007365] Funding Source: researchfish
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [1410435] Funding Source: National Science Foundation
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External driving is emerging as a promising tool for exploring new phases in quantum systems. The intrinsically nonequilibrium states that result, however, are challenging to describe and control. We study the steady states of a periodically driven one-dimensional electronic system, including the effects of radiative recombination, electron-phonon interactions, and the coupling to an external fermionic reservoir. Using a kinetic equation for the populations of the Floquet eigenstates, we show that the steady-state distribution can be controlled using the momentum and energy relaxation pathways provided by the coupling to phonon and Fermi reservoirs. In order to utilize the latter, we propose to couple the system and reservoir via an energy filter which suppresses photon-assisted tunneling. Importantly, coupling to these reservoirs yields a steady state resembling a band insulator in the Floquet basis. The system exhibits incompressible behavior, while hosting a small density of excitations. We discuss transport signatures and describe the regimes where insulating behavior is obtained. Our results give promise for realizing Floquet topological insulators.
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