Lightwave terahertz quantum manipulation of nonequilibrium superconductor phases and their collective modes
Abstract
We present a gauge-invariant density matrix description of nonequilibrium superconductor (SC) states with spatial and temporal correlations driven by intense terahertz (THz) lightwaves. We derive superconductor Bloch-Maxwell equations of motion that extend Anderson pseudospin models to include the Cooper pair center-of-mass motion and electromagnetic propagation effects. We thus describe quantum control of dynamical phases, collective modes, quasiparticle coherence, and high nonlinearities during cycles of carrier wave oscillations, which relates to our recent experiments. Coherent photogeneration of a nonlinear supercurrent with a dc component, achieved via condensate acceleration by an effective lightwave field, dynamically breaks the equilibrium inversion symmetry. Experimental signatures include high harmonic light emission at equilibrium-symmetry-forbidden frequencies, Rabi-Higgs collective modes and quasiparticle coherence, and nonequilibrium moving condensate states tuned by few-cycle THz fields. We use such lightwaves as an oscillating accelerating force that drives strong nonlinearities and anisotropic quasiparticle populations to control and amplify different classes of collective modes, e.g., damped oscillations, persistent oscillations, and overdamped dynamics via Rabi flopping. Recent phase-coherent nonlinear spectroscopy experiments can be modeled by solving the full nonlinear quantum dynamics including self-consistent light-matter coupling.
- Authors:
-
- Univ. of Alabama, Birmingham, AL (United States)
- Ames Lab., and Iowa State Univ., Ames, IA (United States)
- Publication Date:
- Research Org.:
- Ames Laboratory (AMES), Ames, IA (United States); Univ. of Alabama, Birmingham, AL (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division
- OSTI Identifier:
- 1658569
- Alternate Identifier(s):
- OSTI ID: 1971739
- Report Number(s):
- IS-J-10,303
Journal ID: ISSN 2469-9950; TRN: US2203348
- Grant/Contract Number:
- AC02-07CH11358; SC0019137
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review. B
- Additional Journal Information:
- Journal Volume: 102; Journal Issue: 5; Journal ID: ISSN 2469-9950
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
Citation Formats
Mootz, M., Wang, J., and Perakis, I. E. Lightwave terahertz quantum manipulation of nonequilibrium superconductor phases and their collective modes. United States: N. p., 2020.
Web. doi:10.1103/physrevb.102.054517.
Mootz, M., Wang, J., & Perakis, I. E. Lightwave terahertz quantum manipulation of nonequilibrium superconductor phases and their collective modes. United States. https://doi.org/10.1103/physrevb.102.054517
Mootz, M., Wang, J., and Perakis, I. E. Mon .
"Lightwave terahertz quantum manipulation of nonequilibrium superconductor phases and their collective modes". United States. https://doi.org/10.1103/physrevb.102.054517. https://www.osti.gov/servlets/purl/1658569.
@article{osti_1658569,
title = {Lightwave terahertz quantum manipulation of nonequilibrium superconductor phases and their collective modes},
author = {Mootz, M. and Wang, J. and Perakis, I. E.},
abstractNote = {We present a gauge-invariant density matrix description of nonequilibrium superconductor (SC) states with spatial and temporal correlations driven by intense terahertz (THz) lightwaves. We derive superconductor Bloch-Maxwell equations of motion that extend Anderson pseudospin models to include the Cooper pair center-of-mass motion and electromagnetic propagation effects. We thus describe quantum control of dynamical phases, collective modes, quasiparticle coherence, and high nonlinearities during cycles of carrier wave oscillations, which relates to our recent experiments. Coherent photogeneration of a nonlinear supercurrent with a dc component, achieved via condensate acceleration by an effective lightwave field, dynamically breaks the equilibrium inversion symmetry. Experimental signatures include high harmonic light emission at equilibrium-symmetry-forbidden frequencies, Rabi-Higgs collective modes and quasiparticle coherence, and nonequilibrium moving condensate states tuned by few-cycle THz fields. We use such lightwaves as an oscillating accelerating force that drives strong nonlinearities and anisotropic quasiparticle populations to control and amplify different classes of collective modes, e.g., damped oscillations, persistent oscillations, and overdamped dynamics via Rabi flopping. Recent phase-coherent nonlinear spectroscopy experiments can be modeled by solving the full nonlinear quantum dynamics including self-consistent light-matter coupling.},
doi = {10.1103/physrevb.102.054517},
journal = {Physical Review. B},
number = 5,
volume = 102,
place = {United States},
year = {Mon Aug 24 00:00:00 EDT 2020},
month = {Mon Aug 24 00:00:00 EDT 2020}
}
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Works referencing / citing this record:
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