5 papers
Cooper quartets and fractional vortices in frustrated Josephson junction dice arrays
Erik Lennart Weerda, Olav F. Syljuåsen, Matteo Rizzi +1
Superconductivity mediated by Cooper quartets of charge 4e is a phenomenon of key importance for both the understanding of certain exotic superconductors and the engineering of qua…
Deconfined quantum critical points in fermionic systems with spin-charge separation
Niccolò Baldelli, Arianna Montorsi, Sergi Julià-Farré +3
Deconfined quantum critical points are intriguing transition points not predicted by the Landau-Ginzburg-Wilson symmetry-breaking paradigm which are usually identified by the appea…
Bisognano-Wichmann Hamiltonian for the entanglement spectroscopy of fractional quantum Hall states
A. Nardin, R. Lopes, M. Rizzi +2
We study the Bisognano-Wichmann Hamiltonian for fractional quantum Hall states defined on a sphere and explore its relationship with the entanglement Hamiltonian associated to the…
Fractional quantum Hall states with variational Projected Entangled-Pair States: a study of the bosonic Harper-Hofstadter model
Erik Lennart Weerda, Matteo Rizzi
An important class of model Hamiltonians for investigation of topological phases of matter consists of mobile, interacting particles on a lattice subject to a semi-classical gauge…
Quantum simulation of the tricritical Ising model in tunable Josephson junction ladders
Lorenzo Maffi, Niklas Tausendpfund, Matteo Rizzi +1
Modern hybrid superconductor-semiconductor Josephson junction arrays are a promising platform for analog quantum simulations. Their controllable and non-sinusoidal energy/phase rel…