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  Floquet states in dissipative open quantum systems

Sato, S., de Giovannini, U., Aeschlimann, S., Gierz, I., Hübener, H., & Rubio, A. (2020). Floquet states in dissipative open quantum systems. Journal of Physics B: Atomic, Molecular and Optical Physics, 53(22): 225601. doi:10.1088/1361-6455/abb127.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0007-47E9-3 Version Permalink: http://hdl.handle.net/21.11116/0000-0007-47EA-2
Genre: Journal Article

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Sato_2020_J._Phys._B _At._Mol._Opt._Phys._53_225601.pdf (Publisher version), 3MB
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Sato_2020_J._Phys._B _At._Mol._Opt._Phys._53_225601.pdf
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Open Access. - Original content from this work may be used under the terms of the Creative Commons Attribution 4.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.
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2020
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© the Author(s). Published by IOP Publishing Ltd

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https://arxiv.org/abs/1912.03176 (Preprint)
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https://dx.doi.org/10.1088/1361-6455/abb127 (Publisher version)
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 Creators:
Sato, S.1, 2, Author              
de Giovannini, U.2, Author              
Aeschlimann, S.3, Author              
Gierz, I.3, Author              
Hübener, H.2, Author              
Rubio, A.2, 4, Author              
Affiliations:
1Center for Computational Sciences, University of Tsukuba, ou_persistent22              
2Theory Group, Theory Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_2266715              
3Ultrafast Electron Dynamics, Condensed Matter Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_1938295              
4Center for Computational Quantum Physics (CCQ), Flatiron Institute, ou_persistent22              

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 Abstract: We theoretically investigate basic properties of nonequilibrium steady states of periodically-driven open quantum systems based on the full solution of the Maxwell–Bloch equation. In a resonant driving condition, we find that the transverse relaxation, also known as decoherence, significantly destructs the formation of Floquet states while the longitudinal relaxation does not directly affect it. Furthermore, by evaluating the quasienergy spectrum of the nonequilibrium steady states, we demonstrate that Rabi splitting can be observed as long as the decoherence time is as short as one third of the Rabi-cycle. Moreover, we find that Floquet states can be formed even under significant dissipation when the decoherence time is substantially shorter than the cycle of driving, once the driving field strength becomes strong enough. In an off-resonant condition, we demonstrate that the Floquet states can be realized even in weak field regimes because the system is not excited and the decoherence mechanism is not activated. Once the field strength becomes strong enough, the system can be excited by multi-photon absorption and the decoherence process becomes active. As a result, the Floquet states are significantly disturbed by the environment even in the off-resonant condition. Thus, we show here that the suppression of energy transfer from light to matter is a key condition for the realization of Floquet states in both on- and off-resonant conditions not only because it prevents material damage but also because it contributes to preserving coherence.

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Language(s): eng - English
 Dates: 2020-05-252020-08-202020-10-222020-11-22
 Publication Status: Published in print
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 Rev. Type: Peer
 Identifiers: arXiv: 1912.03176
DOI: 10.1088/1361-6455/abb127
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Title: Journal of Physics B: Atomic, Molecular and Optical Physics
Source Genre: Journal
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Publ. Info: Bristol : IOP Publishing
Pages: - Volume / Issue: 53 (22) Sequence Number: 225601 Start / End Page: - Identifier: ISSN: 0022-3700
ISSN: 1361-6455
CoNE: https://pure.mpg.de/cone/journals/resource/0022-3700