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  Higgs-Mediated Optical Amplification in a Nonequilibrium Superconductor

Buzzi, M., Jotzu, G., Cavalleri, A., Cirac, J. I., Demler, E. A., Halperin, B. I., et al. (2021). Higgs-Mediated Optical Amplification in a Nonequilibrium Superconductor. Physical Review X, 11(1): 011055. doi:10.1103/PhysRevX.11.011055.

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PhysRevX.11.011055.pdf (Publisher version), 2MB
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PhysRevX.11.011055.pdf
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Open Access. - Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.
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2021
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https://arxiv.org/abs/1908.10879 (Preprint)
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https://dx.doi.org/10.1103/PhysRevX.11.011055 (Publisher version)
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 Creators:
Buzzi, M.1, Author              
Jotzu, G.1, Author              
Cavalleri, A.1, Author              
Cirac, J. I.2, Author
Demler, E. A.3, Author
Halperin, B. I.3, Author
Lukin, M. D.3, Author
Shi, T.4, Author
Wang, Y.3, Author
Podolsky, D.5, Author
Affiliations:
1Quantum Condensed Matter Dynamics, Condensed Matter Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_1938293              
2Max Planck Institute for Quantum Optics, ou_persistent22              
3Department of Physics, Harvard University, Cambridge, ou_persistent22              
4CAS Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Science, ou_persistent22              
5Physics Department, Technion, ou_persistent22              

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 Abstract: We propose a novel nonequilibrium phenomenon, through which a prompt quench from a metal to a transient superconducting state can induce large oscillations of the order parameter amplitude. We argue that this oscillating mode acts as a source of parametric amplification of the incident radiation. We report experimental results on optically driven K3C60 that are consistent with these predictions. The effect is found to disappear when the onset of the excitation becomes slower than the Higgs-mode period, consistent with the theory proposed here. These results open new possibilities for the use of collective modes in many-body systems to induce nonlinear optical effects.

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Language(s): eng - English
 Dates: 2020-09-252019-08-292020-10-162021-03-17
 Publication Status: Published online
 Pages: -
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 Table of Contents: -
 Rev. Type: Peer
 Identifiers: arXiv: 1908.10879
DOI: 10.1103/PhysRevX.11.011055
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Project name : -
Grant ID : 319286
Funding program : Funding Programme 7 (FP7)
Funding organization : European Commission (EC)

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Title: Physical Review X
  Abbreviation : Phys. Rev. X
Source Genre: Journal
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Publ. Info: New York, NY : American Physical Society
Pages: - Volume / Issue: 11 (1) Sequence Number: 011055 Start / End Page: - Identifier: Other: 2160-3308
CoNE: https://pure.mpg.de/cone/journals/resource/2160-3308