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DS: Fachverband Dünne Schichten

DS 20: Focussed Session: Frontiers in Exploring and Applying Plasmonic Systems II
(Joint Session of CPP, DS, HL, MM, and O, organized by DS)

DS 20.1: Topical Talk

Dienstag, 21. März 2017, 09:30–10:00, CHE 89

Driving nanophotonics to the atomic scale — •Javier Aizpurua — Center for Materials Physics (CSIC-UPV/EHU) and DIPC, San Sebastian, Spain

Plasmonic nanogaps are formed at the junction of two metallic interfaces and provide a great opportunity to explore atomic-scale morphologies and complex photochemical processes by optically monitoring the excitation of their intense surface plasmonic modes. In recent years, optical spectroscopy of these cavities has proven to be extremely sensitive to atomic-scale features that determine the chemistry and the optoelectronics in the gaps. In this regime, classical theories often fail to address the fine details of the optical response, and more sophisticated quantum models based on condensed matter theory techniques are needed. Additionally, theoretical approaches based on quantum electrodynamics (QED) can be properly developed to address the complex coupling of subnanometric optical cavities with electronic and vibrational states of molecules nearby. A few experimental situations in optoelectronics, molecular spectroscopy and optomechanics, where optics is proven to address the atomic scale and thus quantum effects are shown to be of paramount importance, will be described.