Journal article
Higgs-mediated optical amplification in a nonequilibrium superconductor
- Abstract:
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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.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
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- Files:
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(Preview, Version of record, pdf, 1.8MB, Terms of use)
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- Publisher copy:
- 10.1103/PhysRevX.11.011055
Authors
- Publisher:
- American Physical Society
- Journal:
- Physical Review X More from this journal
- Volume:
- 11
- Article number:
- 011055
- Publication date:
- 2021-03-17
- Acceptance date:
- 2020-10-16
- DOI:
- EISSN:
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2160-3308
- Language:
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English
- Keywords:
- Pubs id:
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1172774
- Local pid:
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pubs:1172774
- Deposit date:
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2023-04-21
Terms of use
- Copyright holder:
- Buzzi et al.
- Copyright date:
- 2021
- Rights statement:
- Copyright © 2021 The Author(s). 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.
- Licence:
- CC Attribution (CC BY)
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