28 July 2024 to 3 August 2024
Europe/London timezone

Phase Diagram of the Schwinger Model by Adiabatic Preparation of States on a Quantum Simulator

Not scheduled
20m
Talk Quantum Computing and Quantum Information Theoretical developments

Speaker

Oleg Kaikov (University Paris-Saclay, CEA-List)

Description

We argue the feasibility to study the phase structure of a quantum physical system on quantum devices via adiabatic preparation of states. We introduce a novel method and successfully test it in application to the Schwinger model in the presence of a topological $\theta$-term. We explore the first-order-phase-transition and the no-transition regions of the corresponding phase diagram. The core idea of the method is to separately evolve the ground and the first excited states with a time-dependent Hamiltonian, the time-dependence of which interpolates between different values of $\theta$. Despite our approach being a direct application of the adiabatic theorem, we are able to demonstrate its advantages in comparison to a different method from the literature that also employs adiabatic state preparation.

Primary author

Oleg Kaikov (University Paris-Saclay, CEA-List)

Co-authors

Mohamed Tamaazousti (University Paris-Saclay, CEA, List) Mr Theo Saporiti (Université Paris-Saclay / CEA) Vasily Sazonov (University Paris-Saclay, CEA, List)

Presentation materials