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Nanophotonics, plasmonics and quantum optics


14:00 Invited talk: Universal light encoders: artificial intelligence hardware for light processing components and integrated systems

A. B. Lopez, F. Getman, M. Makarenko, Q. Wang, A. Fratalocchi
KAUST (Saudi Arabia)

In this invited talk, I will review our recent theoretical and experimental results in the field of Universal Light Encoders (ULE) artificial intelligence (AI) hardware for a new class of flexible ultra-flat components (thickness $textless$ 100nm) for high efficiency (close to unitary) vectorial control of light These devices are supported by a layer of ?physical? neural network units in suitably engineered optical nanoresonators.
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14:20 Invited talk: Surface Enhanced Visible Absorption of Dye Molecules in the Near-Field of Gold Nano-Antennas

Siham Refki, Zouheir Sekkat
University Mohammed V (Morocco)

Surface enhanced absorption was clearly reported to occur in the infrared region of the spectrum of light. In this presentation, we show that it also occurs in the visible region of the spectrum by using a dye, i.e. an azo-dye, which exhibits a good light absorption in that region, and gold nanoparticles, which act as plasmonic nanoantennas, when the azo-dyes and the nanoparticles are incorporated in the bulk of solid films of polymer.
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14:40: Near-field spectroscopy of a phonon polariton infrared metasurface

Andrea Mancini (1), Christopher R. Gubbin (2), Rodrigo Berte (1), Alberto Politi (2), Yi Li (3), Simone De Liberato (2), Stefan A. Maier (1)
(1)LMU Munich (Germany) , (2)University of Southampton (United Kingdom) , (3)Southern University of Science and Technology (China)

Surface Phonon Polaritons (SPhPs) can be excited in the Reststrahlen band of polar dielectrics where the dielectric function is negative. Antennas supporting SPhPs are an alternative to plasmonic resonators in the infrared, due to their reduced losses and higher field confinement. We investigate the near-field response of arrays of Silicon Carbide antennas by means of scattering scanning near field microscopy. Knowledge of the near-field response is needed for many applications requiring coupling of the antennas to other elements.
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14:55 Invited talk: Riesz-projection based simulation and analysis of resonant photonic devices and machine-learning based parameter optimization

Fridtjof Betz (1), Felix Binkowski (1), Matthias Plock (1), Lilli Kuen (1), Phillip Manley (2), Philipp-Immanuel Schneider (2), Martin Hammerschmidt (2), Lin Zschiedrich (2), Sven Burger (1)
(1)Zuse Institute Berlin (Germany) , (2)JCMwave GmbH (Germany)

We present Riesz projection based methods relying on contour integration for efficiently computing quasi-normal modes and modal expansions of near-field and far-field physical quantities. We use a finite-element method based implementation of these methods for the analysis of nanophotonic resonators for quantumoptics applications. We use Bayesian optimization methods for finding best geometry parameters yielding, e.g., resonators with maximized quality factor.
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15:15 Invited talk: Long Wavelength Infrared Detection by Combining Nano-Thermoelectrics and Sub-Wavelength Absorbers

Aapo Varpula, Anton Murros, Kuura Sovanto, Jonna Tiira, Kirsi Tappura, Mika Prunnila
VTT Technical Research Centre of Finland Ltd (Finland)

Detection of infrared (IR) radiation is required in numerous applications from spectroscopic gas sensing to thermal imaging. Obtaining high speed and sensitivity, low-power operation, and cost-effectiveness with a single technology remains to be a challenge in the field of IR sensing. By combining nano-thermoelectric heat-to-voltage transduction and sub-wavelength absorbers, we demonstrate uncooled IR bolometer technology that provides fast and high sensitivity response to long-wavelength IR (LWIR) around 8 - 12 $\mu$m and is material-compatible with large-scale CMOS fabrication.
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