31 citations · 51 across the 3 of their papers we have counts for
3 papers
Thermodynamic Limit in the Two-qubit Quantum Rabi Model with Spin-Spin Coupling
R. Grimaudo, G. Falci, A. Messina +4
The occurrence of a second-order superradiant quantum phase transition is brought to light in a quantum system consisting of two interacting qubits coupled to the same quantized fi…
Quantum phase transitions for an integrable quantum Rabi-like model with two interacting qubits
Roberto Grimaudo, Antonio S. M. de Castro, Antonino Messina +2
A two-interacting-qubit quantum Rabi-like model with vanishing transverse fields on the qubit-pair is studied. Independently of the coupling regime, this model can be exactly and u…
Spin-chain-star systems: entangling multiple chains of spin qubits
R. Grimaudo, A. S. M. de Castro, A. Messina +1
We consider spin-chain-star systems characterized by N-wise many-body interactions between the spins in each chain and the central one. We show that such systems can be exactly map…