Düsseldorf 2007 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 55: Quanteneffekte (Lichtstreuung I)
Q 55.4: Talk
Thursday, March 22, 2007, 12:45–13:00, 5E
The Spectrum of non-Markovian resonance fluorescence — •Geesche Boedecker and Carsten Henkel — Universität Potsdam, Institut für Physik, Am Neuen Palais 10, 14469 Potsdam
We study the resonance fluorescence from a driven two-level atom coupled to a structured reservoir, as it can be realized in a photonic crystal near a band edge. Due to the singular mode density of the vacuum field, the time evolution of both atom and field shows nontrivial memory effects and is highly non-Markovian. We investigate the dynamics of the atomic Bloch vector and identify algebraic tails in the long-time limit. Similarly, the dipole correlation function ⟨ σ†(t1)σ( t2 )⟩ depends on both times t1, t2 which makes the notion of a spectrum problematic. We give a critical discussion of different methods to approach this problem.