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Q: Fachverband Quantenoptik und Photonik

Q 29: Poster Quanteneffekte

Q 29.9: Poster

Tuesday, March 11, 2008, 16:30–19:00, Poster C2

Negative refraction in atomic two-component media — •Bastian Jungnitsch and Jörg Evers — Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg

We discuss the feasibility of obtaining negative refraction with low losses or even gain in an atomic gas consisting of two different species of atoms [1]. The two components yield electrical and magnetical responses, respectively, which are individually tailored via external fields to give the desired negative index of refraction. Using different atoms for magnetic and electric response allows to relax the stringent requirements to achieve negative refraction in single species systems [2]. For this, several few-level systems with different combinations of coherent and incoherent driving fields are compared with an emphasis on the problem of obtaining a sufficiently large magnetic response. Based on these results, we discuss potential candidate systems in real atoms.

[1] B. Jungnitsch and J. Evers, in preparation

[2] P. P. Orth, J. Evers, and C. H. Keitel, arXiv:0711.0303