Superradiant light scattering from thermal atomic vapors

Superradiant light scattering from noncondensed, thermal atomic vapors was experimentally studied. We found that superradiant gain is independent of quantum degeneracy and determined only by the shape of the atomic cloud and a contained number of atoms. Superradiant pump-probe spectroscopy was also...

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Bibliographic Details
Published in:Physical review letters 2005-03, Vol.94 (8), p.083602.1-083602.4, Article 083602
Main Authors: YOSHIKAWA, Yutaka, TORII, Yoshio, KUGA, Takahiro
Format: Article
Language:English
Subjects:
Classical and quantum physics: mechanics and fields
Effects of atomic coherence on propagation, absorption and amplification of light
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Matter waves
Optics
Physics
Quantum optics
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Summary:Superradiant light scattering from noncondensed, thermal atomic vapors was experimentally studied. We found that superradiant gain is independent of quantum degeneracy and determined only by the shape of the atomic cloud and a contained number of atoms. Superradiant pump-probe spectroscopy was also developed to measure the atomic correlation function, revealing the Doppler-width-limited coherence time of the thermal gas and sudden buildup of long-lived coherence below the transition temperature.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.94.083602