Berlin 2018 – wissenschaftliches Programm
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HL: Fachverband Halbleiterphysik
HL 16: Focussed Session: Quantum Nanophotonics in Solid State Systems: Status, Challenges and Perspectives I (joint session HL/TT)
HL 16.15: Vortrag
Dienstag, 13. März 2018, 15:00–15:15, EW 201
Cavity Optomagnonics — •Silvia Viola Kusminskiy1, Florian Marquardt1,2, Hong Tang3, and Jasmin Graf1,2 — 1Max Planck for the Science of Light, Erlangen, Germany — 2Friedrich-Alexander-Universität Erlangen-Nürnberg, Germany — 3Yale University, New Haven, USA
In optomagnonics, light couples coherently to collective magnetic excitations in solid state systems. This topic is of high interest for quantum information processing platforms at the nanoscale, and recent experiments have demonstrated the optomagnonic coupling for the first time. In this talk, I show how to obtain the microscopic optomagnonic Hamiltonian starting from the Faraday effect and discuss the optically-induced classical nonlinear dynamics for a homogeneous magnetic mode. A unique feature of optomagnonic systems is moreover the possibility of coupling light to spin excitations on top of magnetic textures. For the case of a microdisk geometry, I discuss the coupling between magnon modes in the presence of a magnetic vortex, and light confined to whispering gallery modes.