Observation of superradiant Raman scattering in a Bose-Einstein condensate

We observed superradiant Raman scattering from a Bose-Einstein condensate irradiated by a single off-resonant light beam. Spontaneous mode selection of the scattered radiation turns probabilistic optical pumping into a stimulated Raman process, whereby the atoms are coherently transferred into a dif...

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Veröffentlicht in:	Physical review. A, Atomic, molecular, and optical physics Atomic, molecular, and optical physics, 2004-04, Vol.69 (4), Article 041603
Hauptverfasser:	Yoshikawa, Yutaka, Sugiura, Toshiaki, Torii, Yoshio, Kuga, Takahiro
Format:	Artikel
Sprache:	eng
Schlagworte:	ATOMIC AND MOLECULAR PHYSICS ATOMS BOSE-EINSTEIN CONDENSATION HYPERFINE STRUCTURE IRRADIATION MODE SELECTION OPTICAL PUMPING PHOTON-ATOM COLLISIONS PROBABILISTIC ESTIMATION RAMAN EFFECT RUBIDIUM STIMULATION SUPERRADIANCE VISIBLE RADIATION
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Zusammenfassung:	We observed superradiant Raman scattering from a Bose-Einstein condensate irradiated by a single off-resonant light beam. Spontaneous mode selection of the scattered radiation turns probabilistic optical pumping into a stimulated Raman process, whereby the atoms are coherently transferred into a different hyperfine state. The population in the pumped state grew exponentially in time, demonstrating the emergence of bosonic stimulation in the optical pumping process.
ISSN:	1050-2947 1094-1622
DOI:	10.1103/PhysRevA.69.041603