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Regensburg 2019 – scientific programme

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HL: Fachverband Halbleiterphysik

HL 21: Quantum Nanophotonics in Solid State Systems

HL 21.5: Talk

Tuesday, April 2, 2019, 15:00–15:15, H33

Quantization of open and dissipative cavities using quasinormal modes — •Sebastian Franke1, Stephen Hughes2, Mohsen Kamandar Dezfouli2, Philip Trøst Kristensen3, Kurt Busch3,4, Andreas Knorr1, and Marten Richter11Technische Universität Berlin, Institut für Theoretische Physik, Nichtlineare Optik und Quantenelektronik, Hardenbergstraße 36, 10623 Berlin, Germany — 2Department of Physics, Engineering Physics and Astronomy, Queen’s University, Kingston, Ontario, Canada K7L 3N6 — 3Institut für Physik, Humboldt Universität zu Berlin, 12489 Berlin, Germany — 4Max-Born-Institut, 12489 Berlin, Germany

In many cavity-QED platforms, photons are usually described by lossless normal modes, e.g., in the Jaynes-Cummings model. However, for metallic or open cavities, the so-called quasinormal modes1 (QNMs) with complex eigenfrequencies are more appropriate, and are the natural modes to quantize. Here, we develop a powerful quantization scheme for these modes in absorptive and spatially inhomogeneous media, using a Green’s function quantization method2. We derive the corresponding Fock state basis for symmetrized QNMs, leading to an intrinsic inter-mode coupling in the QNM master equation3. Applications of cavity-QED for metal resonators and hybridized plasmonic-photonic crystal cavities are derived and discussed.

1P. T. Leung et al.Phys. Rev. A 49, 3057, 1994

2T. Gruner, and D.-G. Welsch, Phys. Rev. A 53, 1818, 1996

3S. Franke et al., arXiv:1808.06392v2

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