Conference Agenda

TOM5 S02: Resonant Nanophotonics
Wednesday, 14/Sept/2022:
2:30pm - 4:00pm

Session Chair: Sara Nunez Sanchez, University of Vigo, Spain
Location: B120

1st floor, 70 seats

2:30pm - 3:00pm
ID: 368 / TOM5 S02: 1
TOM 5 Resonant Nanophotonics


Aitzol Garcia Etxarri

Donostia International Physics Cente, Spain


3:00pm - 3:15pm
ID: 145 / TOM5 S02: 2
TOM 5 Resonant Nanophotonics

Dynamics of the optical forces in nanosystems

Andrei Kiselev, Karim Achouri, Olivier J. F. Martin

Swiss Federal Institute of Technology Lausanne (EPFL), Switzerland

We investigate optical forces in the time domain, instead of using the time-average Maxwell stress tensor. We demonstrate first that a plane wave causes on a physical object an optical pressure that fluctuates at optical frequency in the time domain. The analytical formula for the optical force dynamics is presented for this case. The case for two-wave illumination with slightly different frequencies is considered next. It is shown that in this case the optical force acquires a component at the beating frequency. The analytical expression for the transient force is deduced and its relation with average force explained in detail.

3:15pm - 3:30pm
ID: 224 / TOM5 S02: 3
TOM 5 Resonant Nanophotonics

Nanohybrid architectures for strong light-matter interaction

Marzia Ferrera1, Vicenzo Aglieri1, Jacopo Stefano Pelli Cresi1, Remo Proietti Zaccaria1, Luca Razzari2, Andrea Toma1

1Istituto Italiano di Tecnologia, via Morego 30, 16163 Genova, Italy; 2INRS Énergie, Matériaux et Télécommunications, 1650 Blvd Lionel Boulet, J3X 1S2 Varennes, QC, Canada

The investigation of strong light-matter interactions in nanohybrid architectures is promising for both fundamental studies and novel technological applications. In particular, the properties of low-dimensional semiconducting materials can be properly tailored via their integration with optical nanocavities, with strong implications on the final device performance. Here we present two main experiments, in which we exploit ad-hoc designed photonic nanoarchitectures to reshape, respectively, the exciton and phonon energy landscapes of quantum dots. Our results are stimulating towards further explorations of the physics of strongly coupled hybrid systems which present potential interest in several fields, spanning from photocatalysis to optoelectronic and quantum technologies.

3:30pm - 3:45pm
ID: 244 / TOM5 S02: 4
TOM 5 Resonant Nanophotonics

Numerical investigation of far-field circular dichroism and local chiral response of pseudo-chiral meta-surface with FEM

Jayeeta Amboli1, Guillaume Demesy1, Bruno Galas2, Nicolas Bonod1

1Institute Fresnel, Aix-Marseille University, France; 2Institut des NanoSciences de Paris, Sorbonne Universités, UPMC Univ Paris 06,France

Circular dichroism spectroscopy is a sensitive and widely applied technique to detect chiral molecules. Recent studies have shown high prospects for plasmonic metasurfaces of pseudo-chiral nano-resonators in enhancing chiral sensitivity. Here we study the far-field circular dichroism for gold U-shaped metasurfaces by calculating Mueller matrix elements with the Finite element method and investigate its response in light of the near field electric energy and optical chiral density.