Numerical techniques for assisting quantum computers in the early fault-tolerance era

by Andrea De Girolamo

Thursday 7 May 2026, 17:00 → 17:15 Europe/Rome

1/1-3 - Aula B (Dipartimento di Fisica e Astronomia - Edificio Marzolo)

Quantum computers promise significant speedups for several hard problems, but noise still limits their performance and scalability. Transitioning from the Noisy Intermediate Scale Quantum (NISQ) era to fault-tolerant quantum computing (FTQC) will require addressing errors through both quantum and classical techniques.  In this talk, I will present how my research on numerical methods for integrating quantum computers contributes to this goal. First, I will introduce quantum compilation -- the problem of mapping a quantum circuit into an equivalent one that can be run on real hardware -- and show how it can be rewritten as a thermodynamic process that exhibits Ising-type phase transitions. Then, I will discuss a proposal for a hybrid classic-quantum framework based on tree tensor networks for simulating quantum dynamics, extending the capabilities of near-term quantum devices.