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  Floquet-engineered light-cone spreading of correlations in a driven quantum chain

Kalthoff, M., Kennes, D. M., & Sentef, M. A. (2019). Floquet-engineered light-cone spreading of correlations in a driven quantum chain. Physical Review B, 100(16): 165125. doi:10.1103/PhysRevB.100.165125.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0004-AE05-3 Version Permalink: http://hdl.handle.net/21.11116/0000-0004-DF98-6
Genre: Journal Article

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PhysRevB.100.165125.pdf (Publisher version), 2MB
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© American Physical Society

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https://arxiv.org/abs/1907.12987 (Preprint)
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https://dx.doi.org/10.1103/PhysRevB.100.165125 (Publisher version)
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 Creators:
Kalthoff, M.1, Author              
Kennes, D. M.2, Author
Sentef, M. A.1, Author              
Affiliations:
1Theoretical Description of Pump-Probe Spectroscopies in Solids, Theory Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_3012828              
2Institut für Theorie der Statistischen Physik, RWTH Aachen University, ou_persistent22              

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 Abstract: We investigate the light-cone-like spread of electronic correlations in a laser-driven quantum chain. Using the time-dependent density matrix renormalization group, we show that high-frequency driving leads to a Floquet-engineered spread velocity that determines the enhancement of density-density correlations when the ratio of potential and kinetic energies is effectively increased both by either a continuous or a pulsed drive. For large times we numerically show the existence of a Floquet steady state at not too long distances on the lattice with minimal heating. Intriguingly, we find a discontinuity of dynamically scaled correlations at the edge of the light cone, akin to the discontinuity known to exist for quantum quenches in Luttinger liquids. Our work demonstrates the potential of pump-probe experiments for investigating light-induced correlations in low-dimensional materials and puts quantitative speed limits on the manipulation of long-ranged correlations through Floquet engineering.

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Language(s): eng - English
 Dates: 2019-10-042019-07-302019-10-162019-10-15
 Publication Status: Published in print
 Pages: -
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 Rev. Method: Peer
 Identifiers: arXiv: 1907.12987
DOI: 10.1103/PhysRevB.100.165125
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Project name : We acknowledge helpful discussions with Andrew Millis and Michael Sekania. M.H.K. acknowledges financial support by the IMPRS-UFAST Program. Financial support by the DFG through the Emmy Noether program is gratefully acknowledged (D.M.K.: KA 3360/2-1; M.A.S.:SE 2558/2-1).
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Title: Physical Review B
  Abbreviation : Phys. Rev. B
Source Genre: Journal
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Publ. Info: Woodbury, NY : American Physical Society
Pages: - Volume / Issue: 100 (16) Sequence Number: 165125 Start / End Page: - Identifier: ISSN: 1098-0121
CoNE: https://pure.mpg.de/cone/journals/resource/954925225008