We present, the results of an experiment on light scattering from an elongated Bose-Einstein condensate interacting with far off resonant laser light. Due to superradiant Rayleigh scattering a coherent superposition of two atomic wavepackets with different momenta forms in the presence of a single laser beam. Varying the intensity of a weak counterpropagating laser beam we observe the transition from the pure superradiant regime to the Bragg scattering regime where Rabi oscillations in a two-level system are observed. The process is limited by the decoherence between the two atomic wavepackets.
From superradiant Rayleigh scattering to Bragg scattering / L. De Sarlo; R. Saers; S. Bartalini; F. S. Cataliotti; L. Fallani; C. Fort; I. Herrera; M. Inguscio. - In: THE EUROPEAN PHYSICAL JOURNAL. D, ATOMIC, MOLECULAR AND OPTICAL PHYSICS. - ISSN 1434-6060. - STAMPA. - 32:(2005), pp. 167-170.
From superradiant Rayleigh scattering to Bragg scattering
CATALIOTTI, FRANCESCO SAVERIO;FALLANI, LEONARDO;FORT, CHIARA;INGUSCIO, MASSIMO
2005
Abstract
We present, the results of an experiment on light scattering from an elongated Bose-Einstein condensate interacting with far off resonant laser light. Due to superradiant Rayleigh scattering a coherent superposition of two atomic wavepackets with different momenta forms in the presence of a single laser beam. Varying the intensity of a weak counterpropagating laser beam we observe the transition from the pure superradiant regime to the Bragg scattering regime where Rabi oscillations in a two-level system are observed. The process is limited by the decoherence between the two atomic wavepackets.
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