Berlin 2014 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 56: Quantum effects: QED II
Q 56.3: Talk
Friday, March 21, 2014, 11:00–11:15, DO26 208
Semiclassical dynamics of laser-driven atoms in optical cavities — •Stefan Schütz1, Hessam Habibian2, and Giovanna Morigi1 — 1Theoretische Physik, Universität des Saarlandes, D-66123 Saarbrücken, Germany — 2Institut de Ciències Fotòniques, Mediterranean Technology Park, E-08860 Castelldefels (Barcelona), Spain
The formation of self-organized structures of atoms is studied when the atoms are driven by a laser and couple to the optical mode of a high-finesse cavity. Self-organization emerges due to the mechanical forces of the cavity photons on the atoms, where the cavity field is pumped by the photons scattered by the atoms from the laser and hence depends on the atomic position [1]. We derive a theoretical model where the atomic motion is treated semiclassically and the cavity field quantum mechanically. This model is valid when the cavity linewidth exceeds the atomic recoil frequency and allows us to determine the quantum state of the intracavity field at the self-organization threshold [2]. In the regime of low pump intensities we analyze the dynamics of cavity cooling [3]. The first and second order correlation functions of the cavity field are then calculated close to the self-organization threshold. The predictions are compared with the results in [4].
[1] H. Ritsch et al., Rev. Mod. Phys. 85, 553 (2013)
[2] J. Dalibard et al., J. Phys. B 18, 1661 (1985)
[3] S. Schütz et al., Phys. Rev. A 88, 033427 (2013)
[4] F. Brennecke et al., PNAS 110, 11763 (2013)