Hannover 2013 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 65: Quantum gases: Bosons III
Q 65.4: Talk
Friday, March 22, 2013, 15:00–15:15, F 342
Correlations of photonic BEC in a micro resonator — •Tobias Rexin1, Carsten Henkel2, and Axel Pelster3 — 1Zentrum für Optische Quantentechnologien and Institut für Laserphysik,Universität Hamburg, 22761 Hamburg, Germany — 2Institut für Physik und Astronomie, Universität Potsdam, 14469 Germany — 3Fachbereich Physik, Technische Universität Kaiserslautern, 67663 Kaiserslautern, Germany
Light confined in a microcavity [1] is described by Maxwell’s equations with appropriate boundary conditions. A careful analysis of the corresponding boundary value problem in suitable coordinates provides a systematic approach to determine the underlying mode functions for the cavity photon field. In paraxial approximation this three-dimensional microcavity problem can be reduced to an effective two-dimensional trapped massive Bose gas which supports the heuristic derivation of Ref. [2]. The obtained quantized photon field with its mode structure can be used to determine various thermodynamic and statistical quantities such as critical particle number and correlation functions. In particular we present the correlation for the cavity photons at finite temperature.
[1] J. Klaers, F. Vewinger, and M. Weitz, Nature Physics 6, 512 (2010).
[2] J. Klaers, J. Schmitt, F. Vewinger, and M. Weitz, Nature 468, 545 (2010).