Title: Collective Lamb Shift in Single-Photon Superradiance
Authors: Roehlsberger, Ralf ×
Schlage, Kai
Sahoo, Balaram
Couet, Sebastien
Rueffer, Rudolf #
Issue Date: Jun-2010
Publisher: Amer assoc advancement science
Series Title: Science vol:328 issue:5983 pages:1248-1251
Abstract: Superradiance, the cooperative spontaneous emission of photons from an ensemble of identical atoms, provides valuable insights into the many-body physics of photons and atoms. We show that an ensemble of resonant atoms embedded in the center of a planar cavity can be collectively excited by synchrotron radiation into a purely superradiant state. The collective coupling of the atoms via the radiation field leads to a substantial radiative shift of the transition energy, the collective Lamb shift. We simultaneously measured the temporal evolution of the superradiant decay and the collective Lamb shift of resonant Fe-57 nuclei excited with 14.4-kilo-electron volt synchrotron radiation. Our experimental technique provides a simple method for spectroscopic analysis of the superradiant emission.
ISSN: 0036-8075
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Nuclear and Radiation Physics Section
× corresponding author
# (joint) last author

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