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SYQT: Symposium Foundations of Quantum Theory

SYQT 1: Foundations of Quantum Theory

SYQT 1.3: Hauptvortrag

Mittwoch, 12. März 2025, 12:00–12:30, HS 1+2

Can quantum information be the underpinning of quantum physics? — •Paolo Perinotti — Pavia University, Pavia, Italy

In the early 2000s the idea that quantum mechanics could be formulated starting from informational axioms broke the ground, as an outcome of the *second quantum revolution*. Since then, the formalism of Hilbert spaces, density matrices, quantum instruments and POVMs was successfully recovered in this perspective, marking an important milestone along the path. The next question regards the reconstruction of physical laws, in a context devoid of any mechanical notion from the outset. The computational model that is closest to the physical model of a quantum field is a quantum cellular automaton. We will discuss how dynamical equations of quantum field theories can be recovered along with space-time itself, from an abstract information processing scenario where elementary quantum systems form a cellular automaton. We will discuss some key philosophical implications for the nature of quantum physics that this approach entails.

Keywords: Quantum foundations; Quantum information; Quantum cellular automata; Quantum field theory