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Non-equilibrium quantum dynamics and formation of the Bose polaron

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Non-equilibrium quantum dynamics and formation of the Bose polaron. / Skou, Magnus G.; Skov, Thomas G.; Jørgensen, Nils B.; Nielsen, Kristian K.; Camacho-Guardian, Arturo; Pohl, Thomas; Bruun, Georg M.; Arlt, Jan J.

I: Nature Physics, Bind 17, Nr. 6, 06.2021, s. 731-735.

Publikation: Bidrag til tidsskrift/Konferencebidrag i tidsskrift /Bidrag til avisLetterForskningpeer review

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Author

Skou, Magnus G. ; Skov, Thomas G. ; Jørgensen, Nils B. ; Nielsen, Kristian K. ; Camacho-Guardian, Arturo ; Pohl, Thomas ; Bruun, Georg M. ; Arlt, Jan J. / Non-equilibrium quantum dynamics and formation of the Bose polaron. I: Nature Physics. 2021 ; Bind 17, Nr. 6. s. 731-735.

Bibtex

@article{fdf276b543da49138352056e791dd0df,
title = "Non-equilibrium quantum dynamics and formation of the Bose polaron",
abstract = "Advancing our understanding of non-equilibrium phenomena in quantum many-body systems remains one of the greatest challenges in physics. Here we report on the experimental observation of a paradigmatic many-body problem, namely the non-equilibrium dynamics of a quantum impurity immersed in a bosonic environment. We use an interferometric technique to prepare coherent superposition states of atoms in a Bose–Einstein condensate with a small impurity-state component, and monitor the evolution of such quantum superpositions into polaronic quasiparticles. These results offer a systematic picture of polaron formation from weak to strong impurity interactions. They reveal three distinct regimes of evolution with dynamical transitions that provide a link between few-body processes and many-body dynamics. Our measurements reveal universal dynamical behaviour in interacting many-body systems and demonstrate new pathways to study non-equilibrium quantum phenomena.",
keywords = "cond-mat.quant-gas, physics.atom-ph",
author = "Skou, {Magnus G.} and Skov, {Thomas G.} and J{\o}rgensen, {Nils B.} and Nielsen, {Kristian K.} and Arturo Camacho-Guardian and Thomas Pohl and Bruun, {Georg M.} and Arlt, {Jan J.}",
note = "Publisher Copyright: {\textcopyright} 2021, The Author(s), under exclusive licence to Springer Nature Limited. Copyright: Copyright 2021 Elsevier B.V., All rights reserved.",
year = "2021",
month = jun,
doi = "10.1038/s41567-021-01184-5",
language = "English",
volume = "17",
pages = "731--735",
journal = "Nature Physics",
issn = "1745-2473",
publisher = "Nature Publishing Group",
number = "6",

}

RIS

TY - JOUR

T1 - Non-equilibrium quantum dynamics and formation of the Bose polaron

AU - Skou, Magnus G.

AU - Skov, Thomas G.

AU - Jørgensen, Nils B.

AU - Nielsen, Kristian K.

AU - Camacho-Guardian, Arturo

AU - Pohl, Thomas

AU - Bruun, Georg M.

AU - Arlt, Jan J.

N1 - Publisher Copyright: © 2021, The Author(s), under exclusive licence to Springer Nature Limited. Copyright: Copyright 2021 Elsevier B.V., All rights reserved.

PY - 2021/6

Y1 - 2021/6

N2 - Advancing our understanding of non-equilibrium phenomena in quantum many-body systems remains one of the greatest challenges in physics. Here we report on the experimental observation of a paradigmatic many-body problem, namely the non-equilibrium dynamics of a quantum impurity immersed in a bosonic environment. We use an interferometric technique to prepare coherent superposition states of atoms in a Bose–Einstein condensate with a small impurity-state component, and monitor the evolution of such quantum superpositions into polaronic quasiparticles. These results offer a systematic picture of polaron formation from weak to strong impurity interactions. They reveal three distinct regimes of evolution with dynamical transitions that provide a link between few-body processes and many-body dynamics. Our measurements reveal universal dynamical behaviour in interacting many-body systems and demonstrate new pathways to study non-equilibrium quantum phenomena.

AB - Advancing our understanding of non-equilibrium phenomena in quantum many-body systems remains one of the greatest challenges in physics. Here we report on the experimental observation of a paradigmatic many-body problem, namely the non-equilibrium dynamics of a quantum impurity immersed in a bosonic environment. We use an interferometric technique to prepare coherent superposition states of atoms in a Bose–Einstein condensate with a small impurity-state component, and monitor the evolution of such quantum superpositions into polaronic quasiparticles. These results offer a systematic picture of polaron formation from weak to strong impurity interactions. They reveal three distinct regimes of evolution with dynamical transitions that provide a link between few-body processes and many-body dynamics. Our measurements reveal universal dynamical behaviour in interacting many-body systems and demonstrate new pathways to study non-equilibrium quantum phenomena.

KW - cond-mat.quant-gas

KW - physics.atom-ph

U2 - 10.1038/s41567-021-01184-5

DO - 10.1038/s41567-021-01184-5

M3 - Letter

VL - 17

SP - 731

EP - 735

JO - Nature Physics

JF - Nature Physics

SN - 1745-2473

IS - 6

ER -