Erlangen 2022 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 16: Quantum Effects I
Q 16.4: Talk
Tuesday, March 15, 2022, 11:15–11:30, Q-H13
Ginzburg effect in a dielectric medium with dispersion and dissipation — •Sascha Lang1,2, Roland Sauerbrey1,3,4, Ralf Schützhold1,5,2, and William G. Unruh6,7 — 1Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany — 2Fakultät für Physik, Universität Duisburg-Essen, Duisburg, Germany — 3Institut für Angewandte Physik, Technische Universität Dresden, Dresden, Germany — 4Center for Advanced Systems Understanding (CASUS), Görlitz, Germany — 5Institut für Theoretische Physik, Technische Universität Dresden, Dresden, Germany — 6Department of Physics and Astronomy, University of British Columbia, Vancouver, Canada — 7Institute for Quantum Science and Engineering, Texas A&M University, College Station, Texas, United States
As a quantum analog of Cherenkov radiation, an inertial photon detector moving through a medium with constant refractive index n may perceive the electromagnetic quantum fluctuations as real photons if its velocity v exceeds the medium speed of light c/n. For dispersive Hopfield type media, we find this Ginzburg effect to extend to much lower v because the phase velocity of light is very small near the medium resonance. In this regime, however, dissipation effects become important. Via an extended Hopfield model, we present a consistent treatment of quantum fluctuations in dispersive and dissipative media and derive the Ginzburg effect in such systems. Finally, we propose an experimental test.