SAMOP 2021 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 17: Quantum Effects
Q 17.10: Poster
Donnerstag, 23. September 2021, 16:30–18:30, P
Steady-state diagonalization of a dielectric medium with dispersion and dissipation — •Sascha Lang1,2, Ralf Schützhold1,3,2, and William G. Unruh4 — 1Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany — 2Fakultät für Physik, Universität Duisburg-Essen, 47057 Duisburg, Germany — 3Institut für Theoretische Physik, Technische Universität Dresden, 01062 Dresden, Germany — 4Department of Physics and Astronomy, University of British Columbia, Vancouver V6T 1Z1, Canada
The established Hopfield model for non-dissipative dielectrics incorporates dispersion by coupling the electric field inside a medium to a continuous set of harmonic oscillators. We further add dissipation by coupling each of these matter oscillators to a scalar environment field [1]. After canonical quantization, the Heisenberg equations of motions can be solved in terms of steady-state solutions which diagonalize the system Hamiltonian. Therefore, our model has a well-defined ground state, which is essential for describing quantum vacuum phenomena such as quantum radiation (e.g. photon creation from vacuum).
[1] S. Lang, R. Schützhold, W. G. Unruh, "Quantum radiation in dielectric media with dispersion and dissipation", Phys. Rev. D 102, 125020 (2020)