Superfluid Flow of Polaron Polaritons above Landau’s Critical Velocity

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Superfluid Flow of Polaron Polaritons above Landau’s Critical Velocity. / Nielsen, Kristian Knakkergaard; Camacho Guardian, Arturo; Bruun, Georg; Pohl, Thomas.

In: Physical Review Letters, Vol. 125, No. 3, 035301, 07.2020.

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

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@article{15a92d41c29149f8a598751144204740,
title = "Superfluid Flow of Polaron Polaritons above Landau{\textquoteright}s Critical Velocity",
abstract = "We develop a theory for the interaction of light with superfluid optical media, describing the motion of quantum impurities that are created and dragged through the liquid by propagating photons. It is well known that a mobile impurity suffers dissipation due to phonon emission as soon as it moves faster than the speed of sound in the superfluid - Landau's critical velocity. Surprisingly we find that in the present hybrid light-matter setting, polaritonic impurities can be protected against environmental decoherence and be allowed to propagate well above the Landau velocity without jeopardizing the superfluid response of the medium. \end{abstract}",
keywords = "SUPERFLUID, Decoherence in quantum gases, BOSE-EINSTEIN CONDENSATE, ELECTROMAGNETICALLY INDUCED TRANSPARENCY, quantum optics",
author = "Nielsen, {Kristian Knakkergaard} and {Camacho Guardian}, Arturo and Georg Bruun and Thomas Pohl",
year = "2020",
month = jul,
doi = "10.1103/PhysRevLett.125.035301",
language = "English",
volume = "125",
journal = "Physical Review Letters",
issn = "0031-9007",
publisher = "AMER PHYSICAL SOC",
number = "3",

}

RIS

TY - JOUR

T1 - Superfluid Flow of Polaron Polaritons above Landau’s Critical Velocity

AU - Nielsen, Kristian Knakkergaard

AU - Camacho Guardian, Arturo

AU - Bruun, Georg

AU - Pohl, Thomas

PY - 2020/7

Y1 - 2020/7

N2 - We develop a theory for the interaction of light with superfluid optical media, describing the motion of quantum impurities that are created and dragged through the liquid by propagating photons. It is well known that a mobile impurity suffers dissipation due to phonon emission as soon as it moves faster than the speed of sound in the superfluid - Landau's critical velocity. Surprisingly we find that in the present hybrid light-matter setting, polaritonic impurities can be protected against environmental decoherence and be allowed to propagate well above the Landau velocity without jeopardizing the superfluid response of the medium. \end{abstract}

AB - We develop a theory for the interaction of light with superfluid optical media, describing the motion of quantum impurities that are created and dragged through the liquid by propagating photons. It is well known that a mobile impurity suffers dissipation due to phonon emission as soon as it moves faster than the speed of sound in the superfluid - Landau's critical velocity. Surprisingly we find that in the present hybrid light-matter setting, polaritonic impurities can be protected against environmental decoherence and be allowed to propagate well above the Landau velocity without jeopardizing the superfluid response of the medium. \end{abstract}

KW - SUPERFLUID

KW - Decoherence in quantum gases

KW - BOSE-EINSTEIN CONDENSATE

KW - ELECTROMAGNETICALLY INDUCED TRANSPARENCY

KW - quantum optics

U2 - 10.1103/PhysRevLett.125.035301

DO - 10.1103/PhysRevLett.125.035301

M3 - Journal article

C2 - 32745417

VL - 125

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 3

M1 - 035301

ER -