Berlin 2001 – wissenschaftliches Programm
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Q: Quantenoptik
Q 24: Cooling and Trapping IV (joint session A and Q)
Q 24.3: Vortrag
Donnerstag, 5. April 2001, 16:15–16:30, H 104
Ground state laser cooling of trapped atoms using electromagnetically induced transparency — •Jürgen Eschner1, Giovanna Morigi2, and Christoph H. Keitel3 — 1Institut für Experimentalphysik, University of Innsbruck, A-6020 Innsbruck, Austria — 2Max-Planck Institut für Quantenoptik, D-85748 Garching, Germany — 3Theoretische Quantendynamik, Fakultät für Physik,University of Freiburg, D-79104 Freiburg, Germany
Electromagnetically induced transparency, also known as dark resonance, describes the suppression of absorption on an atomic transition by simultaneous coherent driving of a coupled transition. Such a manipulation of the absorption on a dipole line, which would usually allow only Doppler cooling, permits laser cooling of a trapped multi-level atom to the ground state of its motion. The method is more efficient than conventional sideband cooling while posing less stringent experimental requirements. We present the theory of this new ground state cooling technique. Its experimental realisation is reported elsewhere [1].
[1] F. Schmidt-Kaler et al., talk on this conference.
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