Dr. Simone Piacentini Profile

Dr. Simone Piacentini

at Politecnico di Milano

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Author

Publications (12)

Proceedings Article | 8 March 2023 Presentation + Paper

Femtosecond-laser written universal quantum photonic processors

C. Pentangelo, F. Ceccarelli, N. Di Giano, R. Arpe, S. Piacentini, A. Crespi, R. Osellame

Proceedings Volume 12446, 1244612 (2023) https://doi.org/10.1117/12.2650091

KEYWORDS: Phase shifts, Crosstalk, Photonic integrated circuits, Fabrication, Quantum photonics, Waveguides, Quantum processors, Calibration, Femtosecond phenomena, Thermal optics

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SPIE Journal Paper | 6 February 2023 Open Access

Deep reinforcement learning for quantum multiparameter estimation

Valeria Cimini, Mauro Valeri, Emanuele Polino, Simone Piacentini, Francesco Ceccarelli, Giacomo Corrielli, Nicolò Spagnolo, Roberto Osellame, Fabio Sciarrino

AP, Vol. 5, Issue 01, 016005, (February 2023) https://doi.org/10.1117/12.10.1117/1.AP.5.1.016005

KEYWORDS: Education and training, Quantum protocols, Quantum experiments, Quantum numbers, Quantum systems, Quantum machine learning, Evolutionary algorithms, Quantum sensors, Quantum bounds, Quantum interferometry

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Proceedings Article | 26 August 2022 Poster + Paper

On-sky experiment of the discrete beam combiner: lessons learned and strategies for improved calibration of the transfer function

Abani Shankar Nayak, Lucas Labadie, Tarun Sharma, Simone Piacentini, Giacomo Corrielli, Roberto Osellame, Ettore Pedretti, Aline Dinkelaker, Eloy Hernandez, Kalaga Madhav, Martin Roth

Proceedings Volume 12183, 121832H (2022) https://doi.org/10.1117/12.2629673

KEYWORDS: Visibility, Waveguides, Cameras, Sensors, Photometry, Calibration, Telescopes, Photodetectors, Interferometry, Integrated optics

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Proceedings Article | 5 March 2022 Presentation + Paper

Universal photonic processors fabricated by femtosecond laser writing

C. Pentangelo, F. Ceccarelli, S. Piacentini, R. Albiero, E. Urbinati, N. Di Giano, S. Atzeni, A. Crespi, R. Osellame

Proceedings Volume 12004, 120040B (2022) https://doi.org/10.1117/12.2608132

KEYWORDS: Phase shifts, Photonic integrated circuits, Femtosecond phenomena, Waveguides, Interferometers, Resistors

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Proceedings Article | 5 March 2021 Presentation + Paper

Space qualification of integrated photonic circuits fabricated by ultrafast laser writing

Simone Piacentini, Tobias Vogl, Giacomo Corrielli, Ping Koy Lam, Roberto Osellame

Proceedings Volume 11676, 1167616 (2021) https://doi.org/10.1117/12.2581227

KEYWORDS: Photonic integrated circuits, Integrated photonics, Integrated circuits, Ultrafast lasers, Integrated circuit design, Waveguides, Satellites, Quantum networks, Quantum communications, Optical fibers

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Proceedings Article | 13 December 2020 Presentation + Paper

First on-sky results with an interferometric discrete beam combiner (DBC) at the William Herschel Telescope

Abani Shankar Nayak, Tarun Kumar Sharma, Lucas Labadie, Simone Piacentini, Giacomo Corrielli, Roberto Osellame, Éric Gendron, Jean-Tristan Buey, Fanny Chemla, Mathieu Cohen, Nazim Bharmal, Lisa Bardou, Lazar Staykov, James Osborn, Timothy Morris, Ettore Pedretti, Aline Dinkelaker, Kalaga Madhav, Martin Roth

Proceedings Volume 11446, 114461D (2020) https://doi.org/10.1117/12.2562563

KEYWORDS: Interferometry, Telescopes, Integrated optics, Waveguides, Spatial filters, Infrared radiation, Laser development, Channel waveguides, Ultrafast lasers, Borosilicate glass

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Proceedings Article | 9 March 2020 Presentation

Integrated discrete beam combiner with a pupil remapper for stellar interferometry (Conference Presentation)

Simone Piacentini, Giacomo Corrielli, Abani Shankar Nayak, Tarun Kumar Sharma, Kalaga Madhav, Ettore Pedretti, Stefano Minardi, Lucas Labadie, Roberto Osellame

Proceedings Volume 11287, 112870B (2020) https://doi.org/10.1117/12.2545027

KEYWORDS: Stellar interferometry, Telescopes, Interferometry, Astronomy, Waveguides, Spatial resolution, Astronomical telescopes, Wavefronts, Interferometers, Photonic integrated circuits

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Proceedings Article | 9 March 2020 Presentation

Femtosecond laser writing of 3D polarization insensitive integrated devices for astrophotonics (Conference Presentation)

Simone Piacentini, Giacomo Corrielli, Abani Shankar Nayak, Tarun Kumar Sharma, Kalaga Madhav, Andrea Adami, Ettore Pedretti, Stefano Minardi, Lucas Labadie, Roberto Osellame

Proceedings Volume 11270, 112700S (2020) https://doi.org/10.1117/12.2544978

KEYWORDS: Polarization, Femtosecond phenomena, Astrophotonics, Telescopes, Waveguides, Stellar interferometry, Birefringence, Annealing, Interferometry, Integrated photonics

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Proceedings Article | 9 March 2020 Presentation

Low-power reconfigurable photonic integrated circuits fabricated by femtosecond laser micromachining (Conference Presentation)

Francesco Ceccarelli, Simone Atzeni, Francesco Pellegatta, Simone Piacentini, Andrea Crespi, Roberto Osellame

Proceedings Volume 11270, 112700U (2020) https://doi.org/10.1117/12.2544669

KEYWORDS: Photonic integrated circuits, Femtosecond laser micromachining, Waveguides, Phase shifts, Laser ablation, Bridges, Rapid manufacturing, Phase shifting, Single mode fibers, Glasses

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Proceedings Article | 3 January 2020 Paper

Integrated optics-interferometry using pupil remapping and beam combination at astronomical H-band

Abani Shankar Nayak, Simone Piacentini, Tarun Kumar Sharma, Giacomo Corrielli, Roberto Osellame, Lucas Labadie, Stefano Minardi, Ettore Pedretti, Kalaga Madhav, Martin Roth

Proceedings Volume 11203, 112030V (2020) https://doi.org/10.1117/12.2541608

KEYWORDS: Visibility, Integrated optics, Astronomy, Telescopes, Physics, Interferometry, Ultrafast lasers, Waveguides, Deformable mirrors, Astrophysics

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Proceedings Article | 4 March 2019 Presentation + Paper

Discrete beam combiners from astronomy to lasers

Stefano Minardi, Momen Diab, Ettore Pedretti, Abani Shankar-Nayak, Allar Saviauk, Simone Piacentini, Giacomo Corrielli, Roberto Osellame, Romina Diener, Jan Tepper, Lucas Labadie, Felix Dreisow, Markus Grafe, Thomas Pertsch, Stefan Nolte, Ronny Errmann, Diane Stoffel, Nadia Chakrova

Proceedings Volume 10921, 1092110 (2019) https://doi.org/10.1117/12.2512276

KEYWORDS: Waveguides, Astronomy, Telescopes, Sensors, Stars, Laser applications, Integrated optics, Fiber lasers, Interferometry

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Proceedings Article | 9 July 2018 Presentation + Paper

A six-apertures discrete beam combiners for J-band interferometry

Ettore Pedretti, S. Piacentini, G. Corrielli, Roberto Osellame, Stefano Minardi

Proceedings Volume 10701, 1070116 (2018) https://doi.org/10.1117/12.2312033

KEYWORDS: Waveguides, Interferometry, Visibility, Telescopes, Integrated optics, Cameras, Astronomy, Stars, Manufacturing, Annealing

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The astronomical J-band (1.25 micrometres) is a relatively untapped wave-band in long-baseline infrared interferometry. It allows access to the photosphere in giant and super-giant stars relatively free from opacities of molecular bands. The J-band can potentially be used for imaging spots in the 1350 nm ionised iron line on slowly rotating magnetically-active stars through spectro-interferometry. In addition, the access to the 1080 nanometres He I line may probe out flows and funnel-flows in T-Tauri stars and allow the study of the star-disk interaction.

We present the progress in the development of a six-inputs, J-band interferometric beam combiner based on the discrete beam combiner (DBC) concept. DBCs are periodic arrays of evanescent coupled waveguides which can be used to retrieve simultaneously the complex visibility of every baseline from a multi-aperture interferometer. Existing, planned or future interferometric facilities combine or will combine six or more telescopes at the time, thus increasing the snapshot uv coverage from the interferometric measurements. A better uv coverage will consequently enhance the accuracy of the image reconstruction. DBCs are part of the wider project Integrated astrophotonics that aims to validates photonic technologies for utilisation in astronomy.

Before manufacturing the component we performed extensive numerical simulations with a coupled modes model of the DBC to identify the best input configuration and array length. The 41 waveguides were arranged on a zig-zag array that allows a simple optical setup for dispersing the light at the output of the waveguides.

The component we are currently developing is manufactured in borosilicate glass using the technique of multi-pass ultrafast laser inscription (ULI), using a mode-locked Yb:KYW laser at the wavelength of 1030 nm, pulse duration of 300 fs and repetition rate of 1 MHz. After annealing, the written components showed a propagation loss less than 0.3 dB/cm and a negligible birefringence at a wavelength of 1310 nm, which makes the components suitable for un-polarized light operation. A single mode fiber-to-component insertion loss of 0.9 dB was measured. Work is currently in progress to characterize the components in spectro-interferometric mode with white light covering the J-band spectrum.

Showing 5 of 12 publications

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