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• W1970234611 abstract "An exactly solvable case of an interacting Hamiltonian of two bosonic modes is considered to study fundamental properties of the entanglement dynamics for coupled nonlinear oscillators. Such an interaction is of physical importance, either in a two-species Bose–Einstein condensate or in the case of two modes of electromagnetic fields interacting in Kerr media. The time-evolved state is obtained analytically for initial products of two Fock and two coherent states, and the purification times of the subsystems are determined. The possibility of dynamical generation of a quantum superposition state is discussed at such purification times. We also identify the existence of two regimes: the short time, phase spread regime where subsystem entropy rises monotonically and the self-interference regime where it oscillates and a purification phenomenon can be observed. Our results also show that the break time from the first regime to the second one becomes longer, as well as the purification and reversibility times, as the Planck constant becomes much smaller than a typical action in phase space." @default.
• W1970234611 created "2016-06-24" @default.
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• W1970234611 date "2003-09-02" @default.
• W1970234611 modified "2023-10-06" @default.
• W1970234611 title "Entanglement dynamics in a two-mode nonlinear bosonic Hamiltonian" @default.
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• W1970234611 doi "https://doi.org/10.1088/0305-4470/36/37/311" @default.
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