Measurement-induced phase transitions in quantum circuits (Lorenzo Piroli, UNIBO, INFN BO)

Novembre 15, 2023@2:30 pm–3:30 pm
Aula 500 e online

Seminario di Fisica Teorica-

The advent of noisy-intermediate-scale quantum (NISQ) devices is opening new horizons for fundamental theoretical research. When viewed as experimental platforms for many-body quantum physics, NISQ devices can be conceptualized as systems evolving according to discrete sequences of few-body unitary processes, local projective measurements, and feedback. These ingredients give rise to new qualitative features and universal phenomena out of equilibrium, such as the recently discovered entanglement measurement-induced phase transitions (MIPTs). In the first part of the talk, I will provide an overview of the recent literature on the subject, introducing different quantum-circuit models for non-equilibrium many-body physics and the MITPs. In the second part, I will focus on some of my recent work on explicit models, showing either interesting new phenomena or allowing for analytic insight based on mappings to statistical mechanics problems.

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