ALESSANDRO BILE

PhD Graduate

PhD program:: XXXV


supervisor: Prof. Fabrizio Frezza
advisor: Prof. Eugenio Fazio
co-supervisor: Prof. Eugenio Fazio

Thesis title: Solitonic Neural Networks Development of an innovative photonic neural network based on solitonic plastic interconnections

In recent years, the problem of managing and processing large quantities of data has led to the search for new methods that could guarantee high computation speed and efficiency.
In particular, research has begun to implement at the software level models capable of replicating the typical learning functions of the brain. In this context, Machine Learning (ML) methods have established themselves as the dominant tool to satisfy complex cognitive objectives (supervised learning, unsupervised learning and reinforcement learning). Software neural models suffer from problems related to large energy demand and low computational speed, if super computers are not available. Indeed, traditional computational architectures are characterized by a distinction between the computational memory functions and the processing activity. The most immediate consequences of this separation are found in a difficulty in achieving high computational speeds, efficiency and low energy consumption. In response to these needs, the neuromorphic approach has been developed which intends to replicate the fundamental functional blocks of the biological brain. Indeed, animal neural systems are the most efficient computers. Nothing is more efficient than a brain. Its functioning is not yet fully understood: however it is based on relatively simple processing per- formed by individual units, the neurons. The complexity derives from the network of synaptic interconnections that make up the complex processing map. A long line of research has developed around electronic neuromorphic hardware. Although excellent results have been achieved, this approach has clashed with the limits imposed by the physics of electrical conduction. These systems are characterized by a high energy loss due to energy dissipation caused by the Joule effect. The complexity required by a neuromorphic hardware is characterized by a very high number of interconnections, a difficult condition to achieve with the electronics. Furthermore, the electronic hardware systems have a static structure and a poor adaptability. Therefore, they are not suitable for the realization of complex networks. Moreover, one of the key words of biological neural learning is plasticity which is the ability to update its own structure according to the inputs to be processed and then stored in memory. Self-modification of geometries underlies learning in the biological brain. Information is processed and stored by tracing specific paths along the complexity of the neural network. The research I conducted during the three years of PhD was focused on the development of a new concept of photonic neuromorphic hardware system, fully operating in the optics domain, capable of recognizing input signals, processing them and simultaneously memorizing them. To achieve this result, I exploited the nonlinear properties of a photorefractive crystal, the lithium niobate (LiNbO3), which are characterized by a plastic refractive index, useful to create dynamical environment for neural processing. This research opens up a new road in neuromorphic research.

Research products

11573/1696147 - 2024 - Tuning of the Berreman mode of GaN/AlxGa1-xN heterostructures on sapphire: The role of the 2D-electron gas in the mid-infrared
Bile, A.; Centini, M.; Ceneda, D.; Sibilia, C.; Passaseo, A.; Tasco, V.; Larciprete, M. C. - 01a Articolo in rivista
paper: OPTICAL MATERIALS (Elsevier BV:PO Box 211, 1000 AE Amsterdam Netherlands:011 31 20 4853757, 011 31 20 4853642, 011 31 20 4853641, EMAIL: nlinfo-f@elsevier.nl, INTERNET: http://www.elsevier.nl, Fax: 011 31 20 4853598) pp. 114708- - issn: 0925-3467 - wos: (0) - scopus: (0)

11573/1704615 - 2024 - Tuning of the Berreman mode of GaN/AlxGa1-xN heterostructures on sapphire: The role of the 2D-electron gas in the mid-infrared
Bile, A.; Centini, M.; Ceneda, D.; Sibilia, C.; Passaseo, A.; Tasco, V.; Larciprete, M. C. - 01a Articolo in rivista
paper: OPTICAL MATERIALS (Elsevier BV:PO Box 211, 1000 AE Amsterdam Netherlands:011 31 20 4853757, 011 31 20 4853642, 011 31 20 4853641, EMAIL: nlinfo-f@elsevier.nl, INTERNET: http://www.elsevier.nl, Fax: 011 31 20 4853598) pp. 114708- - issn: 0925-3467 - wos: WOS:001138713000001 (0) - scopus: 2-s2.0-85179880157 (0)

11573/1697302 - 2023 - Solitonic Neural Networks An Innovative Photonic Neural Network Based on Solitonic Interconnections
Bile, Alessandro - 03a Saggio, Trattato Scientifico

11573/1697570 - 2023 - Overview of Neuromorphic Optical Systems
Bile, Alessandro - 02a Capitolo o Articolo
book: Solitonic Neural Networks: An Innovative Photonic Neural Network Based on Solitonic Interconnections - (978-3-031-48655-5)

11573/1697571 - 2023 - Towards Neuro-Learning Process: Pyschomemories
Bile, Alessandro - 02a Capitolo o Articolo
book: Solitonic Neural Networks: An Innovative Photonic Neural Network Based on Solitonic Interconnections - (978-3-031-48655-5)

11573/1697572 - 2023 - Introduction to Neural Networks: Biological Neural Network
Bile, Alessandro - 02a Capitolo o Articolo
book: Solitonic Neural Networks: An Innovative Photonic Neural Network Based on Solitonic Interconnections - (978-3-031-48655-5)

11573/1697573 - 2023 - Solitonic Neural Network Acting as an Episodic Memory
Bile, Alessandro - 02a Capitolo o Articolo
book: Solitonic Neural Networks: An Innovative Photonic Neural Network Based on Solitonic Interconnections - (978-3-031-48655-5)

11573/1697574 - 2023 - The Solitonic X-Junction as a Photonic Neuron
Bile, Alessandro - 02a Capitolo o Articolo
book: Solitonic Neural Networks: An Innovative Photonic Neural Network Based on Solitonic Interconnections - (978-3-031-48655-5)

11573/1675546 - 2023 - Innovative and non-invasive method for the diagnosis of dyschromatopsia and the re-education of the eyes
Bile, Alessandro; Bile, Gianmarco; Pepino, Riccardo; Tari, Hamed - 01a Articolo in rivista
paper: RESEARCH ON BIOMEDICAL ENGINEERING (Rio de Janeiro RJ: Sociedade Brasileira de Engenharia Biomédica) pp. - - issn: 2446-4740 - wos: (0) - scopus: 2-s2.0-85149037005 (0)

11573/1690462 - 2023 - Tuning mid-infrared polarization sensitive reflectivity in GaN/AlGaN heterostructures
Bile, Alessandro; Centini, Marco; Ceneda, Daniele; Passaseo, Adriana; Maria Tobaldi, David; Tasco, Vittorianna; Sibilia, Concita; Larciprete, Maria Cristina - 04d Abstract in atti di convegno
conference: EOSAM 2023 (Dijon (France))
book: EPJ Web of Conferences - ()

11573/1690459 - 2023 - Solitonic Neural Network: A novel approach of Photonic Artificial Intelligence based on photorefractive solitonic waveguides
Bile, Alessandro; Tari, Hamed; Pepino, Riccardo; Nabizada, Arif; Fazio, Eugenio - 04d Abstract in atti di convegno
conference: EOSAM 2023 (Dijon (France))
book: EPJ Web of Conferences - ()

11573/1685621 - 2023 - Ultra-broadband interconnection between two SPP nanostrips by a photorefractive soliton waveguide
Tari, Hamed; Bile, Alessandro; Nabizada, Arif; Fazio, Eugenio - 01a Articolo in rivista
paper: OPTICS EXPRESS (Optical Society of America:2010 Massachusetts Avenue Northwest:Washington, DC 20036:(800)762-6960, (202)223-8130, EMAIL: custserv@osa.org, INTERNET: http://www.osa.org, Fax: (202)223-1096) pp. 26092- - issn: 1094-4087 - wos: WOS:001051353100002 (0) - scopus: 2-s2.0-85168841583 (2)

11573/1695917 - 2023 - Immobilization of photorefractive solitons by charge anchoring on conductive walls
Tari, Hamed; Bile, Alessandro; Nabizada, Arif; Fazio, Eugenio - 01a Articolo in rivista
paper: OPTICS LETTERS (Washington, D.C. : Optical Society of America) pp. - - issn: 1539-4794 - wos: (0) - scopus: (0)

11573/1690460 - 2023 - Realization of tuneable ultrabroadband interconnection for solitonic-plasmonic synapsis by exploiting epsilon near zero conducting oxides
Tari, Hamed; Bile, Alessandro; Nabizada, Arif; Pepino, Riccardo; Fazio, Eugenio - 04d Abstract in atti di convegno
conference: EOSAM 2023 (Dijon (France))
book: EPJ Web of Conferences - ()

11573/1609861 - 2022 - Development of intellectual and scientific abilities through game‐programming in Minecraft
Bile, Alessandro - 01a Articolo in rivista
paper: EDUCATION AND INFORMATION TECHNOLOGIES (IFIP Technical Committee on Education) pp. - - issn: 1573-7608 - wos: WOS:000752366000001 (7) - scopus: 2-s2.0-85124329563 (13)

11573/1658919 - 2022 - Supervised learning of soliton X-junctions in lithium niobate films on insulator
Bile, Alessandro; Chauvet, Mathieu; Tari, Hamed; Fazio, Eugenio - 01a Articolo in rivista
paper: OPTICS LETTERS (Washington, D.C. : Optical Society of America) pp. - - issn: 1539-4794 - wos: WOS:000886686700004 (3) - scopus: 2-s2.0-85141891153 (2)

11573/1638276 - 2022 - Episodic memory and information recognition using solitonic neural networks based on photorefractive plasticity
Bile, Alessandro; Tari, Hamed; Fazio, Eugenio - 01a Articolo in rivista
paper: APPLIED SCIENCES (Basel: MDPI AG, 2011-) pp. - - issn: 2076-3417 - wos: WOS:000809946300001 (3) - scopus: 2-s2.0-85131759485 (4)

11573/1604047 - 2022 - Novel Model Based on Artificial Neural Networks to Predict Short-Term Temperature Evolution in Museum Environment
Bile, Alessandro; Tari, Hamed; Grinde, Andreas; Frasca, Francesca; Siani, Anna Maria; Fazio, Eugenio - 01a Articolo in rivista
paper: SENSORS (Basel : Molecular Diversity Preservation International (MDPI), 2001-) pp. - - issn: 1424-8220 - wos: WOS:000746934900001 (5) - scopus: 2-s2.0-85123680948 (7)

11573/1663008 - 2022 - Optical soliton neural networks
Fazio, Eugenio; Bile, Alessandro; Tari, Hamed - 02a Capitolo o Articolo
book: Artificial Neural Networks - Recent Advances, New Perspectives and Applications - ()

11573/1662550 - 2022 - Strategies for the deployment of microclimate sensors in spaces housing collections
Frasca, Francesca; Verticchio, Elena; Peiró‑Vitoria, Andrea; Grinde, Andreas; Bile, Alessandro; Chimenti, Claudio; Conati Barbaro, Cecilia; Favero, Gabriele; Fazio, Eugenio; Garcia‑Diego, F‑J; Siani, Anna Maria - 01a Articolo in rivista
paper: HERITAGE SCIENCE (Chemistry Central -Part of Springer Science+Business Media) pp. 1-17 - issn: 2050-7445 - wos: WOS:000899556500001 (3) - scopus: 2-s2.0-85144112050 (4)

11573/1604653 - 2022 - Sigmoid type neuromorphic activation function based on saturable absorption behavior of graphene/PMMA composite for intensity modulation of surface plasmon polariton signals
Tari, Hamed; Bile, Alessandro; Moratti, Francesca; Fazio, Eugenio - 01a Articolo in rivista
paper: PLASMONICS (Norwell, MA : Springer Science + Business Media, c2006-) pp. - - issn: 1557-1955 - wos: WOS:000745434700001 (4) - scopus: 2-s2.0-85123233606 (4)

11573/1594815 - 2021 - Prediction of the microclimate through NAR and NARX neural networks: application to Rosenborg Castle, museum partner of the CollectionCare project
Bile, Alessandro; Frasca, Francesca; Siani, Anna Maria; Verticchio, Elena; Grinde, Andreas; Fazio, Eugenio - 04d Abstract in atti di convegno
conference: CollectionCare Conference (Valencia)
book: CollectionCare Conference - ()

11573/1564460 - 2021 - Supervised and unsupervised learning using a fully-plastic all-optical unit of artificial intelligence based on solitonic waveguides
Bile, Alessandro; Moratti, Francesca; Tari, Hamed; Fazio, Eugenio - 01a Articolo in rivista
paper: NEURAL COMPUTING & APPLICATIONS (Berlin, London, New York: Springer Verlag) pp. - - issn: 0941-0643 - wos: WOS:000678291400001 (6) - scopus: 2-s2.0-85111117022 (6)

11573/1540087 - 2021 - Study of magnetic switch for surface plasmon-polariton circuits
Bile, Alessandro; Pepino, Ricardo; Fazio, Eugenio - 01a Articolo in rivista
paper: AIP ADVANCES (USA: American Institute of Physics,) pp. 045222- - issn: 2158-3226 - wos: WOS:000641767600002 (6) - scopus: 2-s2.0-85104538311 (6)

11573/1540611 - 2021 - Plasmonic-Solitonic coupling structure
Camponeschi, Federico; Bile, Alessandro; Tari, Hamed; Fazio, Eugenio - 01a Articolo in rivista
paper: INTERNATIONAL JOURNAL OF SCIENTIFIC ENGINEERING AND APPLIED SCIENCE (Chennai: IJSEAS) pp. - - issn: 2395-3470 - wos: (0) - scopus: (0)

11573/1496689 - 2021 - Definition of allowable targets from indoor climate observations in exhibition rooms: the case study of the Rosenborg Castle (Denmark)
Frasca, Francesca; Verticchio, Elena; Bile, Alessandro; Fazio, Eugenio; Favero, Gabriele; Chimenti, Claudio; Vulpiani, Angelo; Moscarini, Marina; Lupi, Stefano; Grinde, Andreas; Siani, Anna Maria - 04f Poster
conference: 3° Congresso Nazionale AISAM (Associazione Italiana di Scienze dell'Atmosfera e Meteorologia) (L'Aquila (online))
book: 3° Congresso Nazionale AISAM (Associazione Italiana di Scienze dell'Atmosfera e Meteorologia) - ()

11573/1579507 - 2021 - Stigmergic electronic gates and networks
Ianero, Biagio; Bile, Alessandro; Alonzo, Massimo; Fazio, Eugenio - 01a Articolo in rivista
paper: JOURNAL OF COMPUTATIONAL ELECTRONICS (Dordrecht : Kluwer) pp. - - issn: 1572-8137 - wos: WOS:000706909600003 (4) - scopus: 2-s2.0-85117004644 (4)

11573/1540606 - 2021 - Development of sol-gel based carbon ceramic electrode modified by graphene oxide - polypyrrole nanocomposite for simultaneous determination of uric acid and dopamine in presence of ascorbic acid
Reza Majidi, Mir; Tari, Hamed; Bile, Alessandro; Fazio, Eugenio - 01a Articolo in rivista
paper: INTERNATIONAL JOURNAL OF SCIENTIFIC ENGINEERING AND APPLIED SCIENCE (Chennai: IJSEAS) pp. - - issn: 2395-3470 - wos: (0) - scopus: (0)

11573/1481103 - 2020 - Photonic implementation of an elementary unit of artificial intelligence based on solitonic waveguides
Bile, A.; Moratti, F.; Fazio, E. - 04d Abstract in atti di convegno
conference: ICOP2020 Italian Optics and Photonics Conference (Parma)
book: ICOP2020 Italian Optics and Photonics Conference - ()

11573/1481117 - 2020 - Implementation of neuromorphic activation function within Surface Plasmon Polariton circuits
Tari, Hamed; Bile, Alessandro; Moratti, Francesca; Fazio, Eugenio - 04f Poster
conference: ICOP2020 Italian Optics and Photonics Conference (Parma)
book: ICOP2020 Italian Optics and Photonics Conference - ()

11573/1481124 - 2020 - Surface Plasmon Polariton neuromorphic circuit with sigmoid activation function
Tari, Hamed; Bile, Alessandro; Moratti, Francesca; Fazio, Eugenio - 04f Poster
conference: EPS-QEOD Europhoton (Praga)
book: EPS-QEOD Europhoton - ()

11573/1409578 - 2019 - Stigmergic reinforcement learning using All-Optical soltionic X-junctions
Fazio, E.; Alonzo, M.; Belardini, A.; Bile, A.; Soci., C. - 04d Abstract in atti di convegno
conference: EOS SIOF CAPRI MEETINGS (Capri)
book: EOS SIOF CAPRI MEETINGS OµS’19 - ()

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