We study a generic time-dependent Jaynes–Cummings model, discovering universal
features of its time evolution on a dynamical time scale which is here defined as an integral …

We describe the dynamics of quantum discord of two interacting spin-1/2's subjected to
controllable time-dependent magnetic fields. The exact time evolution of discord is given for …

Using the ZA method proposed for the first time in this paper, it is theoretically possible to
obtain general or analytical solutions for an infinite number of ordinary and partial differential …

The exact quantum dynamics of a single spin‐1/2 in a generic time‐dependent classical
magnetic field are investigated and compared with the quantum motion of a spin‐1/2 studied …

It has been theoretically demonstrated that two spins (qubits or qutrits), coupled by
exchange interaction only, undergo a coupling-based joint Landau-Majorana-Stückelberg …

We study and compare the time evolutions of concurrence and quantum discord in a driven
system of two interacting qubits prepared in a generic Werner state. The corresponding …

A system of a quantum harmonic oscillator bi-linearly coupled with a Glauber amplifier is
analysed considering a time-dependent Hamiltonian model. The Hilbert space of this system …

We report the step-by-step construction of the exact, closed and explicit expression for the
evolution operator U (t) of a localized and isolated qubit in an arbitrary time-dependent field …

An exact analytical treatment of the dynamical problem for time-dependent 2× 2 pseudo-
Hermitian su (1, 1) Hamiltonians is reported. A class of exactly solvable and physically …

We analyze a system of two interacting spin-qubits subjected to a Landau-Majorana-
Stückelberg-Zener (LMSZ) ramp. We prove that LMSZ transitions of the two spin qubits are …