Interactions between structured light and matter at the nano-scale II
14:00 Invited talk : Shaping the topology of light with metallic nanostructures
H. Magallanes (1),D. Hakobyan (1),G. Gervinskas (2),G. Seniutinas (2),S. Juodkazis (2),E. Brasselet (1)
(1)University of Bordeaux (France) , (2)Swinburne University of Technology (Australia) Structured metallic nanolayers allow spin-controlled shaping of the topological features of light. We present several options relying on geometrical properties of the metallic design. Experimental demonstration is made in the visible domain using ion-beam milled gold films with typical thickness of the order of 100nm.
14:20 Invited talk : Control of nanostructures by exploiting the symmteries of the light-matter interaction
Gabriel Molina-Terriza, Xavier Zambrana-Puyalto, Ivan Fernandez-Corbaton, Nora Tischler, Mathieu L. Juan, Xavier Vidal
Macquarie University (Australia) We have developed techniques to control the scattering and probe the properties of nanostructures with light. We show how the angular momentum and the helicity of light fields can be used to retrieve information from nano and micro particles which is typically hidden to the usual optical characterization techniques. In particular, we show applications to position sensing, enhancement of the optical activity of molecular samples and design of metamaterials for transformation optics.
14:40 Invited talk : Nanoplasmonics for control over localized emission and heat generation
Imperial College London (United Kingdom) Metallic nanostructures allow for the generation of spatially structured optical near-fields and near-field gradients, and have been heavily employed in surface-enhanced sensing and spectroscopies. Here we will present two new studies, namely control over quantum dot emission in extended hot spots of ring nanocavities, and the controlled heating of a solid state nanopore for molecular translocation studies.
15:00 Invited talk : Spin-polarization Properties of Optical Metasurfaces: Control of Light Transmission and Emission
D. N. Neshev
The Australian National University (Australia) The symmetry of the meta-atoms and their arrangement of optical metasurfaces can dramatically influence their response to spin polarized light. In particular we review our recent studies on control of circular dichroism by metasurfaces of different rotational symmetries as well as the control of spin of photons from emitters coupled to the meta-atoms.
15:20 Invited talk : Chiral interaction of light and matter in confined geometries
Vienna University of Technology (Austria) Light with strong intensity gradients at the wavelength scale exhibits a significant polarization component along its direction of propagation. The interaction of quantum emitters with such light fields leads to new and surprising effects. Making use of these findings, we experimentally demonstrate first examples of a new class of nonreciprocal nanophotonic devices which exploit the chiral interaction between quantum emitters and transversally confined photons.