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  Capturing vacuum fluctuations and photon correlations in cavity quantum electrodynamics with multitrajectory Ehrenfest dynamics

Hoffmann, N., Schäfer, C., Rubio, A., Kelly, A., & Appel, H. (2019). Capturing vacuum fluctuations and photon correlations in cavity quantum electrodynamics with multitrajectory Ehrenfest dynamics. Physical Review A, 99(6): 063819. doi:10.1103/PhysRevA.99.063819.

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PhysRevA.99.063819.pdf (Verlagsversion), 2MB
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© American Physical Society

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https://arxiv.org/abs/1901.01889 (Preprint)
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https://dx.doi.org/10.1103/PhysRevA.99.063819 (Verlagsversion)
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 Urheber:
Hoffmann, N.1, 2, Autor           
Schäfer, C.1, 2, Autor           
Rubio, A.1, 2, 3, Autor           
Kelly, A.1, 2, 4, Autor           
Appel, H.1, 2, 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              
3Center for Computational Quantum Physics (CCQ), Flatiron Institute, ou_persistent22              
4Department of Chemistry, Dalhousie University, ou_persistent22              

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 Zusammenfassung: We describe vacuum fluctuations and photon-field correlations in interacting quantum mechanical light-matter systems, by generalizing the application of mixed quantum-classical dynamics techniques. We employ the multi-trajectory implementation of Ehrenfest mean field theory, traditionally developed for electron-nuclear problems, to simulate the spontaneous emission of radiation in a model quantum electrodynamical cavity-bound atomic system. We investigate the performance of this approach in capturing the dynamics of spontaneous emission from the perspective of both the atomic system and the cavity photon field, through a detailed comparison with exact benchmark quantum mechanical observables and correlation functions. By properly accounting for the quantum statistics of the vacuum field, while using mixed quantum-classical (mean field) trajectories to describe the evolution, we identify a surprisingly accurate and promising route towards describing quantum effects in realistic correlated light-matter systems.

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Sprache(n): eng - English
 Datum: 2019-01-292019-06-172019-06
 Publikationsstatus: Erschienen
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 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: Expertenbegutachtung
 Identifikatoren: arXiv: 1901.01889
DOI: 10.1103/PhysRevA.99.063819
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Projektname : We would like to thank N. Säkkinen and J. Flick for insightful discussions and acknowledge financial support from the European Research Council (Grant No. ERC-2015-AdG-694097). A.K. acknowledges support from the National Sciences and Engineering Research Council (NSERC) of Canada.
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Titel: Physical Review A
  Andere : Physical Review A: Atomic, Molecular, and Optical Physics
  Andere : Phys. Rev. A
Genre der Quelle: Zeitschrift
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Ort, Verlag, Ausgabe: New York, NY : American Physical Society
Seiten: - Band / Heft: 99 (6) Artikelnummer: 063819 Start- / Endseite: - Identifikator: ISSN: 1050-2947
CoNE: https://pure.mpg.de/cone/journals/resource/954925225012_2