Stuttgart 2012 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 4: Quanteneffekte: QED
Q 4.5: Talk
Monday, March 12, 2012, 11:30–11:45, V7.01
Semiclassical theory of self-organization of atoms in optical cavities — •Stefan Schütz1, Hessam Habibian1,2, and Giovanna Morigi1 — 1Theoretische Physik, Universität des Saarlandes, D-66041 Saarbrücken, Germany — 2Grup d’Óptica, Universitat Autònoma de Barcelona, E-08193 Bellaterra, Barcelona, Spain
We theoretically study the formation of self-organized structures of atoms, whose dipolar transition is driven by a laser and also couples to the optical mode of a high-finesse cavity. Self-organization in the cavity field emerges due to the mechanical forces of the cavity photons on the atoms, whereby the cavity field is sustained by the photons scattered by the atoms from the laser and hence depends on the atomic position. We consider the semiclassical model in [1], which is used in order to describe the onset on self-organization, and identify the limits of validity. From the Fokker-Planck equation in [1] we derive a numerical model, from which we study self-organization for various parameters and number of atoms. We compare our findings with the results in [2], finding full agreement. In addition, we discuss the effects of shot noise on the dynamics of self-organization.
[1] P. Domokos et al., J. Phys. B: At. Mol. Opt. Phys. 34 187-198 (2001)
[2] J. K. Asbóth, P. Domokos, H. Ritsch, and A. Vukics, Phys. Rev. A 72, 053417 (2005)