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  Quantum Electrodynamic Control of Matter: Cavity-Enhanced Ferroelectric Phase Transition

Ashida, Y., Imamoglu, A., Faist, J., Jaksch, D., Cavalleri, A., & Demler, E. (2020). Quantum Electrodynamic Control of Matter: Cavity-Enhanced Ferroelectric Phase Transition. Physical Review X, 10(4): 041027. doi:10.1103/PhysRevX.10.041027.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0005-FE4E-7 Version Permalink: http://hdl.handle.net/21.11116/0000-0007-609A-F
Genre: Journal Article

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PhysRevX.10.041027.pdf (Publisher version), 5MB
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PhysRevX.10.041027.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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2020
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© the Author(s). Published by the American Physical Society

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https://arxiv.org/abs/2003.13695 (Preprint)
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https://dx.doi.org/10.1103/PhysRevX.10.041027 (Publisher version)
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 Creators:
Ashida, Y.1, Author
Imamoglu, A.2, Author
Faist, J.2, Author
Jaksch, D.3, Author
Cavalleri, A.3, 4, Author              
Demler, E.5, Author
Affiliations:
1Department of Applied Physics, University of Tokyo, ou_persistent22              
2Institute of Quantum Electronics, ETH Zurich, ou_persistent22              
3Clarendon Laboratory, University of Oxford, ou_persistent22              
4Quantum Condensed Matter Dynamics, Condensed Matter Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_1938293              
5Department of Physics, Harvard University, ou_persistent22              

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 Abstract: The light-matter interaction can be utilized to qualitatively alter physical properties of materials. Recent theoretical and experimental studies have explored this possibility of controlling matter by light based on driving many-body systems via strong classical electromagnetic radiation, leading to a time-dependent Hamiltonian for electronic or lattice degrees of freedom. To avoid inevitable heating, pump-probe setups with ultrashort laser pulses have so far been used to study transient light-induced modifications in materials. Here, we pursue yet another direction of controlling quantum matter by modifying quantum fluctuations of its electromagnetic environment. In contrast to earlier proposals on light-enhanced electron-electron interactions, we consider a dipolar quantum many-body system embedded in a cavity composed of metal mirrors and formulate a theoretical framework to manipulate its equilibrium properties on the basis of quantum light-matter interaction. We analyze hybridization of different types of the fundamental excitations, including dipolar phonons, cavity photons, and plasmons in metal mirrors, arising from the cavity confinement in the regime of strong light-matter interaction. This hybridization qualitatively alters the nature of the collective excitations and can be used to selectively control energy-level structures in a wide range of platforms. Most notably, in quantum paraelectrics, we show that the cavity-induced softening of infrared optical phonons enhances the ferroelectric phase in comparison with the bulk materials. Our findings suggest an intriguing possibility of inducing a superradiant-type transition via the light-matter coupling without external pumping. We also discuss possible applications of the cavity-induced modifications in collective excitations to molecular materials and excitonic devices.

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Language(s): eng - English
 Dates: 2020-08-072020-03-302020-09-152020-11-06
 Publication Status: Published online
 Pages: -
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 Table of Contents: -
 Rev. Type: Peer
 Identifiers: arXiv: 2003.13695
DOI: 10.1103/PhysRevX.10.041027
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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: 10 (4) Sequence Number: 041027 Start / End Page: - Identifier: Other: 2160-3308
CoNE: https://pure.mpg.de/cone/journals/resource/2160-3308