Paper 13111-6
Paper 13111-6
Controlling the Purcell effect and the Lamb shift in plasmonic configurations (Invited Paper)
18 August 2024 • 11:40 AM - 12:05 PM PDT | Conv. Ctr. Room 4
Abstract
Light emission from single emitters, such as organic molecules, quantum dots, or nitrogen vacancies in nanocrystals strongly depends on the electromagnetic environment surrounding the emitter. The interaction of the emitter with strong local electromagnetic fields gives rise to an acceleration of the total decay rate (Purcell effect) which usually results in a broader emission line of the emitter, as well as an energy shift of the emission (Lamb shift). Plasmonic nanoantennas are versatile building blocks which localize light below the diffraction limit thanks to the extremely small effective mode volumes of localized surface plasmons, triggering out the possibility to tailor and exploit both the Purcell factor and the Lamb shift of nearby emitters, even reaching the strong coupling regime with polariton splitting in light emission.
We theoretically describe light emission from a variety of nanoantenna-emitter configurations and reveal the potential of plasmonic nanogaps to tailor and engineering the Purcell factor and Lamb shift of light emitted from single nearby emitters, in agreement with experimental evidence.
Presenter
Donostia International Physics Ctr. (Spain), IKERBASQUE, Basque Foundation for Science (Spain), Univ. del País Vasco (Spain)
Javier Aizpurua is an Ikerbasque Research Professor at Donostia International Physics Center, San Sebastian, Spain, where he leads the "Theory of Nanophotonics Group".
Aizpurua studies the interaction between light and matter at the nanoscale, with special emphasis in the optical response of metallic nanoantennas and quantum effects in plasmonics. He has developed theoretical models and calculations which have helped to understand the excitation of surface plasmons in a variety of spectroscopy and microscopy techniques.
The study of the optical response in extreme nanostructures guided his scientific career, taking him to a leading role in the research of Quantum Plasmonics worldwide, with several seminal contributions in the field, which includes the prediction of tunneling in plasmonic gaps at optical frequencies, or the identification of a novel regime in optomechanics involving molecular vibrations in plasmonic cavities.