7 papers
Bipolar Thermoelectric Superconducting Quantum Devices
F. Antola, G. Marchegiani, A. Braggio +1
Quantum technologies increasingly require accurate modeling of their hardware components and of the non-equilibrium regimes in which they operate, where managing heat and energy fl…
Quantum solitons and their quantum walks in transmon arrays
Ben Blain, Giampiero Marchegiani, Luigi Amico +1
Superconducting qubits are artificial atoms whose spectra and interactions can be engineered through appropriate circuit design, a versatility that can be exploited for quantum sim…
Fraunhofer Patterns in Atomic Josephson Junctions
Kevin T. Geier, Giampiero Marchegiani, Vijay Pal Singh +2
Driven atomic Josephson junctions allow one to monitor phase-coherent dynamics with unprecedented control and flexibility of the system's physical conditions. While cold-atom manif…
Proximity effect in asymmetric-gap superconducting bilayers and regularization of transition rates
G. Marchegiani, G. Catelani
The standard mean-field treatment of low-temperature superconductors leads to a square-root divergent density of states at the gap value. This feature can lead to unphysical logari…
Suppressing chaos with mixed superconducting qubit devices
Ben Blain, Giampiero Marchegiani, Luigi Amico +1
In quantum information processing, a tension between two different tasks occurs: while qubits' states can be preserved by isolating them, quantum gates can be realized only through…
Nonequilibrium regimes for quasiparticles in superconducting qubits with gap-asymmetric junctions
G. Marchegiani, G. Catelani
Superconducting qubits hold promise for quantum computing, but their operation is challenged by various sources of noise, including excitations known as quasiparticles. Qubits with…