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Isotropic Phase-Number Squeezing and Macroscopic Quantum Coherence
G. M. D'Ariano, M. Fortunato, P. Tombesi
A new master equation performing isotropic phase-number squeezing is suggested. The phase properties of coherent superpositions are analyzed when the state evolves in presence of a…
Time Evolution of an Anharmonic Oscillator Interacting with a Squeezed Bath
G. M. D'Ariano, M. Fortunato, P. Tombesi
The evolution of a single mode of the electromagnetic field interacting with a squeezed bath in a Kerr medium is considered. The solution of the corresponding master equation is gi…
Hypersensitivity to perturbation in the quantum kicked top
Ruediger Schack, Giacomo M. D'Ariano, Carlton M. Caves
For the quantum kicked top we study numerically the distribution of Hilbert-space vectors evolving in the presence of a small random perturbation. For an initial coherent state cen…