Superradiant Light Scattering from Thermal Atomic Vapors

Yutaka Yoshikawa, Yoshio Torii, Takahiro Kuga
2005 Physical Review Letters  
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.
doi:10.1103/physrevlett.94.083602 pmid:15783892 fatcat:pguen3v7ufcyvcxkk5a25eydi4