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  Down-conversion processes in ab initio nonrelativistic quantum electrodynamics

Welakuh, D., Ruggenthaler, M., Tchenkoue Djouom, M.-L., Appel, H., & Rubio, A. (2021). Down-conversion processes in ab initio nonrelativistic quantum electrodynamics. Physical Review Research, 3(3): 033067. doi:10.1103/PhysRevResearch.3.033067.

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PhysRevResearch.3.033067.pdf (Verlagsversion), 8MB
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PhysRevResearch.3.033067.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. Open access publication funded by the Max Planck Society.
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2021
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© the Author(s). Published by the American Physical Society

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https://arxiv.org/abs/2103.06947 (Preprint)
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https://dx.doi.org/10.1103/PhysRevResearch.3.033067 (Verlagsversion)
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 Urheber:
Welakuh, D.1, 2, 3, Autor           
Ruggenthaler, M.1, 2, 3, 4, Autor           
Tchenkoue Djouom, M.-L.1, 2, 3, Autor           
Appel, H.1, 2, 3, Autor           
Rubio, A.1, 2, 3, 4, 5, Autor           
Affiliations:
1Theory Group, Theory Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_2266715              
2Center for Free-Electron Laser Science, ou_persistent22              
3Department of Physics, Universität Hamburg, ou_persistent22              
4The Hamburg Center for Ultrafast Imaging, Universität Hamburg, ou_persistent22              
5Center for Computational Quantum Physics, Flatiron Institute, ou_persistent22              

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 Zusammenfassung: The availability of efficient photon sources with specific properties is important for quantum-technological applications. However, the realization of such photon sources is often challenging and hence alternative perspectives that suggest different means to enhance desired properties while suppressing detrimental processes are valuable. In this work we highlight that ab initio simulations of coupled light-matter systems can provide such alternative avenues. We show for a simple model of a quantum ring that by treating light and matter on equal footing, we can create and enhance pathways for down-conversion processes. By changing the matter subsystem as well as the photonic environment in experimentally feasible ways, we can engineer hybrid light-matter states that enhance at the same time the efficiency of the down-conversion process and the nonclassicality of the created photons. Furthermore, we show that this also leads to a faster down-conversion, potentially avoiding detrimental decoherence effects.

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Sprache(n): eng - English
 Datum: 2021-03-112021-07-012021-07-19
 Publikationsstatus: Online veröffentlicht
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 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: Expertenbegutachtung
 Identifikatoren: arXiv: 2103.06947
DOI: 10.1103/PhysRevResearch.3.033067
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Projektname : We would like to thank Frank Schlawin, Nicolas Tancogne-Dejean, and Arunangshu Debnath for insightful discussions and Sebastian Ohlmann for the help with the efficient massive parallel implementation of our code. We acknowledge financial support from the European Research Council (Grant No. ERC-2015-AdG-694097) and the SFB925 “Light induced dynamics and control of correlated quantum systems.” This work was supported by the Excellence Cluster “CUI: Advanced Imaging of Matter” of the Deutsche Forschungsgemeinschaft, EXC 2056, Project No. 390715994.
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Titel: Physical Review Research
Genre der Quelle: Zeitschrift
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Affiliations:
Ort, Verlag, Ausgabe: College Park, Maryland, United States : American Physical Society (APS)
Seiten: - Band / Heft: 3 (3) Artikelnummer: 033067 Start- / Endseite: - Identifikator: ISSN: 2643-1564
CoNE: https://pure.mpg.de/cone/journals/resource/2643-1564