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Roberto Osellame
Researcher at Polytechnic University of Milan
Publications - 509
Citations - 16360
Roberto Osellame is an academic researcher from Polytechnic University of Milan. The author has contributed to research in topics: Femtosecond & Laser. The author has an hindex of 65, co-authored 467 publications receiving 13859 citations. Previous affiliations of Roberto Osellame include Foton Motor & Leonardo.
Papers
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Journal ArticleDOI
Integrated multimode interferometers with arbitrary designs for photonic boson sampling
Andrea Crespi,Roberto Osellame,Roberta Ramponi,Daniel J. Brod,Ernesto F. Galvão,Nicolò Spagnolo,Chiara Vitelli,Chiara Vitelli,Enrico Maiorino,Paolo Mataloni,Fabio Sciarrino +10 more
TL;DR: In this article, a five-mode integrated interferometer containing three-dimensional S-bent waveguides was used to sample three single photons and the probability ratios of all events were measured.
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Two-Particle Bosonic-Fermionic Quantum Walk via Integrated Photonics
Linda Sansoni,Fabio Sciarrino,Giuseppe Vallone,Giuseppe Vallone,Paolo Mataloni,Andrea Crespi,Andrea Crespi,Roberta Ramponi,Roberta Ramponi,Roberto Osellame,Roberto Osellame +10 more
TL;DR: This work investigates how the particle statistics, either bosonic or fermionic, influences a two-particle discrete quantum walk, using polarization entanglement to simulate the bunching-antibunching feature of noninteracting bosons and fermions.
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Anderson localization of entangled photons in an integrated quantum walk
Andrea Crespi,Roberto Osellame,Roberta Ramponi,Vittorio Giovannetti,Rosario Fazio,Rosario Fazio,Linda Sansoni,Francesco De Nicola,Fabio Sciarrino,Paolo Mataloni +9 more
TL;DR: In this article, the interplay between the Anderson localization mechanism and the bosonic/fermionic symmetry of the wave function was investigated for a discrete quantum walk affected by position-dependent disorder.
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Mode matching in multiresonant plasmonic nanoantennas for enhanced second harmonic generation
Michele Celebrano,Xiaofei Wu,Milena Baselli,Swen Großmann,Paolo Biagioni,Andrea Locatelli,Costantino De Angelis,Giulio Cerullo,Roberto Osellame,Bert Hecht,Lamberto Duò,Franco Ciccacci,Marco Finazzi +12 more
TL;DR: Doubly-resonant single-crystalline gold nanostructures with no axial symmetry displaying spatial mode overlap at both the excitation and second harmonic wavelengths are described, enabling a second harmonic photon yield higher than 3 × 10(6) photons per second.
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Femtosecond writing of active optical waveguides with astigmatically shaped beams
Roberto Osellame,Stefano Taccheo,Marco Marangoni,Roberta Ramponi,Paolo Laporta,Dario Polli,Sandro De Silvestri,Giulio Cerullo +7 more
TL;DR: In this article, an approach for the fabrication of optical waveguides by focused low-repetition-rate femtosecond laser pulses is described. But the main limitation of this approach is the strong asymmetry of the waveguide profile.