Seminar: Tunable Josephson junction arrays as quantum simulators: the example of the tricritical Ising model

27 February 2024
Start time 
2:00 pm
Aula A212, Polo Ferrari 1 (Povo1), Via Sommarive 5, Trento
Dr Matteo M. Wauters, Prof. Philipp Hauke
Target audience: 
University community
Contact details: 
Conference e-mail
Prof. Michele Burrello, Niels Bohr Institute, University of Copenhagen


In the last years, the development of Josephson junction arrays based on hybrid superconductor – semiconductor devices allowed us to reach a remarkable level of control of their main physical parameters. In this talk I will introduce the basic features of these platforms; I will present the analogy of these systems with trapped ultracold bosons and discuss how these solid-state setups can be used as analog quantum simulators. Then, I will focus on the example offered by the design of a specific model, based on a ladder geometry of Josephson junctions, that allows for the exploration of the physics of the tricritical Ising model. This is the simplest example of conformal field theory beyond Ising. I will discuss the building blocks necessary for its quantum simulation, the underlying field theory, and I will show tensor-network results which confirm the emergence of a tricritical Ising point is this Josephson junction system.



Prof. Michele Burrello, Niels Bohr Institute, University of Copenhagen



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This initiative is part of the European project:

Funded by the European Union. Views and opinions expressed are however those of the author(s) only and do not necessarily reflect those of the European Union or the European Commission. Neither the European Union nor the granting authority can be held responsible for them.
This project has received funding from the European Union’s Horizon Europe research and innovation programme under grant agreement No 101080086 NeQST.