Erlangen 2018 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 31: Quantum Effects (QED)
Q 31.1: Vortrag
Dienstag, 6. März 2018, 14:00–14:15, K 1.013
Statistical and Geometrical Aspects of Atom-Surface Interaction in Dynamical Nonequilibrium — •Daniel Reiche1,2, Francesco Intravaia2, and Kurt Busch1,2 — 1Humboldt-Universität zu Berlin, Institut für Physik, AG Theoretische Optik & Photonik, Newtonstr. 15, 12489 Berlin, Germany — 2Max Born Institute for Nonlinear Optics and Short Pulse Spectroscopy, Max-Born-Str. 2A, 12489 Berlin, Germany
The energy contained in fluctuations exactly equates that lost in dissipation, if both the system of interest and its environment are in thermodynamic equilibrium. This quantitative balance is a remarkable feature of open (quantum) systems and often serves as a conceptual basis for describing nonequilibrium situations. Indeed, it is commonly assumed that despite the system equilibrates not as a whole, separated subsystems equilibrate locally with their immediate surroundings. Relying on equilibrium results significantly reduces the technical complexity of computations, but neglects long-range correlations.
In the context of atom-surface interaction, we study the impact of nonequilibrium physics on quantum friction as well as Casimir-Polder interaction for planar geometries, e.g. a single half-space or a planar cavity. Considering a linear response of the particle to electromagnetic perturbations, we do not rely on any particular assumption on statistical measures such as Markovianity or Local Thermal Equilibrium. We place a special emphasize on the interplay between the chosen setup and the influence of nonequilibrium.