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Nanophotonics, plasmonics and quantum optics
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Senglee Foo
Huawei Technologies (Canada)
Tightly-coupled dipole arrays (TCDA) have been developed based on current-sheet periodic structure to achieve ultra-broadband impedance performance with wide scanning capability. This paper presents an alternative ultra-broadband periodic array using continuous magneto-electric (ME) currents, which can be implemented using radiating slots and horizontal monopoles. The proposed ME array is scalable from sub-6GHz to millimeter-wave and has the advantage of much simpler feed structure and does not require extremely small capacitive gap between radiating elements.
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Soren Raza
Technical University of Denmark (Denmark)
In this talk, I will present results on thermo-optic and electromechanical tuning of optical Mie resonances in high-refractive-index silicon nanostructures. Using in situ electron energy-loss spectroscopy, we show that the high thermo-optic coefficient of silicon enables tuning between the near field of Mie resonances supported by silicon nanoparticles in the visible. We also demonstrate an electromechanical platform composed of a silicon nanobeam dimer to electrically tune the optical response.
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Alejandro Manjavacas
IO-CSIC (Spain)
Ordered arrays of metallic nanostructures support collective modes known as lattice resonances, which give rise to very strong and spectrally narrow optical responses. Here, we show that, thanks to their collective nature, the lattice resonances of a periodic array of metallic nanoparticles can mediate an efficient long-range coupling between two dipole emitters placed near the array.
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Maria Caterina Giordano (1), Matteo Gardella (1), Matteo Barelli (1), Giorgio Zambito (1), Giulio Ferrando (1), Pham Duy Long (2), Nguyen Si Hieu (2), Francesco Buatier de Mongeot (1)
(1)Universita di Genova (Italy) , (2)Vietnam Academy of Science and Technology (Vietnam)
The nanofabrication of large-area metasurfaces with tunable optoelectronic response is crucial in many fields from plasmonics to energy conversion. Here the engineering of self-organized plasmonic antennas will be demonstrated, showing their performances in photo-degradation of polluting molecules. In parallel, the capability to strongly couple light to large-area 2D semiconductor layers will be shown. Thanks to nanoscale re-shaping of the interface to form flat-optics nanogratings superior photon harvesting performances can be achieved with strong impact in photonics and energy conversion.
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17:45 Invited talk: Magnetoplasmonic nanocavities for the enhanced magnetic control of light polarization via hybridization with dark plasmons
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Paolo Vavassori (1), Andrey Chuvilin (1), Alberto Lopez-Ortega (2), Nicoló Maccaferri (3), Mario Zapata-Herrera (4), Matteo Pancaldi (5)
(1)CIC nanoGUNE BRTA (Spain) , (2)Universidad Pública de Navarra (Spain) , (3)University of (Luxembourg) , (4)Materials Physics Center (Spain) , (5)Elettra Synchrotron Trieste (Italy)
Enhancing magneto-optical effects is crucial for size reduction of key photonic devices based on non-reciprocal propagation of light and to enable active nanophotonics. Here, we disclose an approach that exploits multipolar Fano resonances excitable in symmetry broken magnetoplasmonic nanocavities and arising from the hybridization of dark plasmons with dipolar plasmonic resonances to achieve an unprecedented amplification of magneto-optical activity.
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Andrea Toma
Istituto Italiano di Tecnologia (Italy)
The fabrication of hybrid systems composed by optical nanocavities and quantum dots represents a key approach to induce new,and distinctive physico-chemical properties, with significant implications in fields ranging from cavity quantum electrodynamics,to polariton chemistry. Here, strong coupling between surface plasmon polaritons and nanocrystal quasiparticles such as,excitons and phonons has been investigated through steady-state and time resolved spectroscopies, thus confirming, the possibility of altering the intrinsic nanomaterial response by means of properly tailored optical nanoresonators.
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