Berlin 2014 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 30: Poster: Photonics, laser development and applications, ultrashort laser pulses, quantum effects
Q 30.66: Poster
Dienstag, 18. März 2014, 16:30–18:30, Spree-Palais
On the fluctuations of the Casimir-Polder force — •Oliver Urban, Stefan Scheel, and Johannes Fiedler — Universität Rostock
One particular consequence of quantum vacuum fluctuation of the electromagnetic field is the Casimir-Polder interaction, which occurs between polarisable particles near a magnetodielectric medium. The existence of this force has been predicted as early as 1948 , with the first experimental demonstration using sodium atoms in 1993 . Casimir-Polder forces can be viewed as quantum averages of the quantum Lorentz force . By the fact that this interaction is generated by vacuum fluctuations, the associated force itself fluctuates, so it can be decomposed into an average and a fluctuating component. With a view towards applications of Casimir-Polder potentials as part of a trapping potential for ultracold atoms close to surfaces, such fluctuations could lead to heating and trap loss. We present the first steps towards an understanding of these higher-order fluctuations of the quantized electromagnetic field [4,5].
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