Hannover 2013 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 62: Ultracold atoms: Manipulation and detection
Q 62.3: Talk
Friday, March 22, 2013, 11:30–11:45, F 142
Atom lens without chromatic aberrations — •Maxim A. Efremov1, Polina V. Mironova2, and Wolfgang P. Schleich1 — 1Institut für Quantenphysik and Center for Integrated Quantum Science and Technology (IQST), Universität Ulm, 89081 Ulm, Germany — 2Theoretische Quantendynamik, Institut für Angewandte Physik, Technische Universität Darmstadt, 64289 Darmstadt
We propose a lens for atoms with reduced chromatic aberrations and calculate its focal length and spot size. In our scheme a two-level atom interacts with a near-resonant standing light wave formed by two running waves of slightly different wave vectors, and a far-detuned running wave propagating perpendicular to the standing wave. We show that within the Raman-Nath approximation and for an adiabatically slow atom-light interaction, the phase acquired by the atom is independent of the incident atomic velocity.