Research

My research focused on quantum computing and quantum technologies, at the interplay with machine learning and deep learning; for example, classical and quantum algorithms for image processing and classification. In 2021-2026, I have published 15 research papers in high-impact journals, of which 8 as first author, such as Nature Communications Physics and npj Quantum Information.

•  Simone Roncallo, Angela Rosy Morgillo, Seth Lloyd, Chiara Macchiavello and Lorenzo Maccone, Divide et impera: hybrid multinomial classifiers from quantum binary models, arXiv.2604.08094 | GitHub
•  Giorgio Minati, Simone Roncallo, Simone Scrofana, Angela Rosy Morgillo, Nicoló Spagnolo, Chiara Macchiavello, Lorenzo Maccone, Valeria Cimini and Fabio Sciarrino Quantum optical neuron for image classification via multiphoton interference, arXiv.2603.28879
•  Mafalda Pinto Couto, Lorenzo Maccone, Lorenzo Catani and Simone Roncallo, First-click time measurements, arXiv.2603.28623
•  Simone Roncallo, Angela Rosy Morgillo, Seth Lloyd, Chiara Macchiavello and Lorenzo Maccone, Quantum optical shallow networks, arXiv.2507.21036 | GitHub
•  Seth Lloyd, Lorenzo Maccone, Lionel Martellini and Simone Roncallo, Quantum stroboscopy for time measurements, Phys. Rev. Lett. 136, 110201 (2026) | arXiv:2507.17740 | GitHub
•  Eugenio Caruccio, Simone Roncallo, Valeria Cimini, Riccardo Albiero, Ciro Pentangelo, Francesco Ceccarelli, Giacomo Corrielli, Roberto Osellame, Nicolò Spagnolo, Lorenzo Maccone, Chiara Macchiavello and Fabio Sciarrino, Quantum analog-to-digital converter for phase estimation, arXiv:2502.07676
•  Emanuele Tumbiolo, Simone Roncallo, Chiara Macchiavello and Lorenzo Maccone, Quantum frequency resampling, npj Quantum Inf. 11, 123 (2025) | arXiv:2501.16283
•  Lorenzo Maccone, Simone Roncallo and Krzysztof Sacha, Quantum measurements of time: A reply to criticisms, arXiv:2501.10416
•  Simone Roncallo, Xi Lu and Lorenzo Maccone, Interferometric binary phase estimations, Quantum 9, 1713 (2025) | arXiv:2407.10966 | GitHub
•  Simone Roncallo, Angela Rosy Morgillo, Chiara Macchiavello, Lorenzo Maccone and Seth Lloyd, Quantum optical classifier with superexponential speedup, Commun. Phys. 8 147 (2025) | arXiv:2404.15266 | GitHub
•  Simone Roncallo, Lorenzo Maccone and Chiara Macchiavello, Quantum JPEG, AVS Quantum Sci. 5, 043803 (2023) | arXiv:2306.09323 | GitHub
•  Simone Roncallo, Lorenzo Maccone and Chiara Macchiavello, Pauli transfer matrix direct reconstruction: channel characterization without process tomography, Quantum Sci. Technol. 9 015010 (2024) | arXiv:2212.11968
•  Simone Roncallo, Lorenzo Maccone and Chiara Macchiavello, Multiqubit noise deconvolution and characterization, Phys. Rev. A 107, 022419 (2023) | arXiv:2207.12386
•  Simone Roncallo, Krzysztof Sacha and Lorenzo Maccone, When does a particle arrive?, Quantum 7, 968 (2023) | arXiv:2205.02219 | GitHub
•  Paolo Meda, Nicola Pinamonti, Simone Roncallo and Nino Zanghì, Evaporation of four-dimensional dynamical black holes sourced by the quantum trace anomaly, Class. Quantum Grav. 38 195022 (2021) [Corrigendum: Class. Quantum Grav. 39 059501 (2022)] arXiv:2103.02057

Manuscripts

•  Simone Roncallo, From imaging to timekeeping. Position, phase and time in quantum technologies, PhD in Physics (2025) | Dissertation
•  Simone Roncallo, Quantization of gravitational radiation over a Schwarzschild spacetime and its semiclassical backreaction: A model of black hole evaporation, Master's Degree in Physics (2020) | Thesis

Supervision

•  Andrea Rusconi | Cosupervisor (In Preparation)
•  Aleksandra Karpova | Cosupervisor (In Preparation)
•  Mafalda Pinto Couto, Time of arrival measurements (2025) | Cosupervisor
•  Emanuele Tumbiolo, Compression algorithms in quantum image processing (2023) | Cosupervisor | Thesis
•  Silvia Macedonio, Qudit noise deconvolution (2022) | Cosupervisor | Thesis