Leonardo Lavagna

Leonardo Lavagna

I'm a mathematician specialized in Data Science currently pursuing a PhD in Quantum Computing

Publications

Here you can find a selection of publications. A complete list with all my scientific contributions can be found here with corresponding BibTeX entries here.

[C9] Additive Resource Scaling in Quantum Circuits for Search in Cryptanalysis

Published in ISCAS, 2026

Non-isolated circuits exhibit additive time-space behavior, instead of standard multiplicative scaling Read more

Recommended citation: L. Lavagna, G. Vittori, A. Rosato and M. Panella, "Additive Resource Scaling in Quantum Circuits for Search in Cryptanalysis," 2026 IEEE International Symposium on Circuits and Systems (ISCAS), Shanghai, China, 2026, pp. 2758-2762 https://ieeexplore.ieee.org/document/11562218

[C8] A Unified Quantum Circuit Framework for Grover Search and Quantum Walks in NISQ Cryptanalysis

Published in ISCAS, 2026

This paper explores the use of quantum search in symmetric cryptanalysis within the Noisy Intermediate-Scale Quantum (NISQ) regime, introducing a unified quantum circuit framework that expresses Grover’s algorithm as a coined quantum walk. Read more

Recommended citation: L. Lavagna, G. Vittori, A. Rosato and M. Panella, "A Unified Quantum Circuit Framework for Grover Search and Quantum Walks in NISQ Cryptanalysis," 2026 IEEE International Symposium on Circuits and Systems (ISCAS), Shanghai, China, 2026, pp. 837-841 https://ieeexplore.ieee.org/document/11562366

[C7] Time Series Anomaly Detection with Quantum Variational Methods and Set Covering

Published in ICASSP, 2026

We propose an enhanced hybrid quantum-classical framework for time series anomaly detection. Building on our previous formulation of the problem as a Quadratic Unconstrained Binary Optimization solved via the Quantum Approximate Optimization Algorithm, we extend the methodology with a statistical model selector and a refined set-covering inference scheme that accounts for temporal-value asymmetries. Read more

Recommended citation: M. Casalbore; L. Lavagna; A. Rosato; M. Panella, "Enhancing QAOA Ansatz via Multi-Parameterized Layer and Blockwise Optimization" In Proceedings of the 2026 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP 2026). Barcelona, Spain, 2026, pp. 1846-1850 https://ieeexplore.ieee.org/document/11464824

[C6] Enhancing QAOA Ansatz via Multi-Parameterized Layer and Blockwise Optimization

Published in ICASSP, 2026

We propose Enhanced QAOA (EQAOA), a modified ansatz that appends a compact multi-parameter layer and uses a blockwise optimization scheme. This design preserves the QAOA evolution while broadening the candidate solution space and easing solution exploration. Read more

Recommended citation: F. De Falco, L. Lavagna, A. Ceschini, and M. Panella, "Enhancing QAOA Ansatz via Multi-Parameterized Layer and Blockwise Optimization" In Proceedings of the 2026 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP 2026). Barcelona, Spain, 2026, pp. 20417-20421, https://ieeexplore.ieee.org/document/11461345

[O1] Smart Microfluidics: a curated dataset of microfluidic liposome formulations with cross-laboratory validation for machine-learning applications

Published in Data in Brief, 2026

This dataset compiles microfluidic liposome production experiments from two laboratories, linking formulation parameters and operating conditions with vesicle size and polydispersity measurements. After a standardized Python-based preprocessing workflow, the harmonized dataset (304 formulations plus 12 validation runs) supports machine-learning benchmarking and evaluation of cross-laboratory reproducibility. Code available here. Read more

Recommended citation: L. Lavagna, G. Buttitta, S. Bonacorsi, C. Barbarito, M. Moliterno, G. Saito, I. Oddone, G. Verdone, S. Raimondi, and M. Panella, "Smart Microfluidics: a curated dataset of microfluidic liposome formulations with cross-laboratory validation for machine-learning applications," Data in Brief, 2026, 112667. https://www.sciencedirect.com/science/article/pii/S2352340926002209

[C5] Hybrid Quantum-Classical Framework for Anomaly Detection in Time Series with QUBO formulation and QAOA

Published in IJCNN, 2025

We introduce a hybrid quantum-classical framework to address anomaly detection problems in time series data using an innovative Quadratic Unconstrained Binary Optimization formulation. Code available here. Associated Blog post here Read more

Recommended citation: M. Casalbore, L. Lavagna, A. Rosato and M. Panella, "Hybrid Quantum-Classical Framework for Anomaly Detection in Time Series with QUBO formulation and QAOA," 2025 International Joint Conference on Neural Networks (IJCNN), Rome, Italy, 2025, pp. 1-8. https://ieeexplore.ieee.org/document/11228152

[C4] Novel Quantum Approaches to Hyperdimensional Computing for Neural Networks

Published in IJCNN, 2025

We introduce new quantum machine learning models that combine both quantum and hyperdimensional computing. Code available here. Associated Blog post here Read more

Recommended citation: L. Lavagna, A. Ceschini, A. Rosato and M. Panella, "Novel Quantum Approaches to Hyperdimensional Computing for Neural Networks," 2025 International Joint Conference on Neural Networks (IJCNN), Rome, Italy, 2025, pp. 1-8. https://ieeexplore.ieee.org/document/11229083

[J3] Machine Learning-Guided microfluidic optimization of clinically inspired liposomes for nanomedicine applications

Published in International Journal of Pharmaceutics, 2025

This article discusses the transformative role of machine learning in optimizing liposome development, a process traditionally limited by its complexity, high cost, and time-intensive experimentation. By analyzing over 300 experimental conditions using a microfluidic production platform inspired by the formulations of Doxil® and Marqibo®, the study demonstrates how predictive models can efficiently determine key liposome characteristics such as particle size and polydispersity index. An open-source simulation tool was also developed to allow researchers to virtually design and test formulations, reducing the need for extensive laboratory work. The models were validated through independent experiments, confirming their robustness and adaptability. Code available here with an associated app here. Read more

Recommended citation: G. Buttitta, L. Lavagna, S. Bonacorsi, C. Barbarito, M. Moliterno, G. Saito, I. Oddone, G. Verdone, S. Raimondi, M. Panella, "Machine Learning-Guided microfluidic optimization of clinically inspired liposomes for nanomedicine applications", International Journal of Pharmaceutics, Vol. 686, 2025. https://www.sciencedirect.com/science/article/pii/S0378517325011998

[J2] On the Effects of Small Graph Perturbations in the MaxCut Problem by QAOA

Published in AVS Quantum Science, 2025

In this article we investigate the Maximum Cut (MaxCut) problem on different graph classes with the quantum approximate optimization algorithm (QAOA) using symmetries. In particular, heuristics on the relationship between graph symmetries and the approximation ratio achieved by a QAOA simulation are considered Read more

Recommended citation: L. Lavagna, S. Piperno, A. Ceschini and M. Panella, "On the Effects of Small Graph Perturbations in the MaxCut Problem by QAOA ," 2025 AVS Quantum Science 7(4), doi: 10.1116/5.0253160. https://www.researchgate.net/publication/396483291_Small_graph_perturbations_QAOA_and_the_MaxCut_problem

[J1] A topical review on time-independent perturbation theory in one-dimensional quantum systems

Published in Physica Scripta, 2025

This review presents time-independent perturbative methods for solving the one-dimensional Schrödinger equation, highlighting representative cases that reveal key aspects of the theory. The focus is on their relevance to quantum computing applications, particularly in systems with finite-dimensional state spaces. Blog post here and code here. There is also an app in the Applets page. Read more

Recommended citation: L. Lavagna, S. Carillo and M. Panella, "A topical review on time-independent perturbation theory in one-dimensional quantum systems," 2025 Phys. Scr. 100 102001. https://iopscience.iop.org/article/10.1088/1402-4896/ae0a8f

[C3] Trade-offs in Cryptosystems by Boolean and Quantum Circuits

Published in ISCAS, 2025

This work explores the impact of NISQ devices on encryption-decryption schemes and has its companion blog post here and code in this repository. Read more

Recommended citation: L. Lavagna, F. De Falco, A. Ceschini, A. Rosato and M. Panella, "Trade-offs in Cryptosystems by Boolean and Quantum Circuits," 2025 IEEE International Symposium on Circuits and Systems (ISCAS), London, UK, pp. 1-5. https://ieeexplore.ieee.org/document/11043205

[C2] Evolving Hybrid Quantum-Classical GRU Architectures for Multivariate Time Series

Published in MLSP, 2024

This paper is about an hybrid quantum-classical Gated Recurrent Unit used to infer information about multidimensional time series and has its companion blog post here. Read more

Recommended citation: Francesca De Falco, Leonardo Lavagna, Andrea Ceschini, Antonello Rosato, Massimo Panella: Evolving Hybrid Quantum-Classical GRU Architectures for Multivariate Time Series, in the 2024 IEEE 34th International Workshop on Machine Learning for Signal Processing (MLSP). https://inspirehep.net/literature/2849278

[C1] A Layerwise-Multi-Angle Approach to Fine-Tuning the Quantum Approximate Optimization Algorithm

Published in IJCNN, 2024

This work was the natural development of my master thesis on quantum optimization and has its companion blog post here. Read more

Recommended citation: L. Lavagna, A. Ceschini, A. Rosato and M. Panella, "A Layerwise-Multi-Angle Approach to Fine-Tuning the Quantum Approximate Optimization Algorithm," 2024 International Joint Conference on Neural Networks (IJCNN), Yokohama, Japan, 2024, pp. 1-8. https://ieeexplore.ieee.org/document/10650075