Generation of entanglement in regular systems

Abstract

We study dynamical generation of entanglement in bipartite quantum systems, characterized by purity (or linear entropy), and caused by the coupling between the two subsystems. Explicit semiclassical theory of purity decay is derived for integrable classical dynamics of the uncoupled system, and for localized (general Gaussian wave-packet) initial states. Purity decays as an algebraic function of time times strength of perturbation, independently of the Planck's constant.

4 pages, 3 figures

References in corpus (4)

• Semiclassical time-evolution of the reduced density matrix and dynamically assisted generation of entanglement for bipartite quantum systems
• Quantum freeze of fidelity decay for a class of integrable dynamics
• Quantum freeze of fidelity decay for chaotic dynamics
• Quantum linear mutual information and classical correlations in globally pure bipartite systems

Cited by in corpus (14)

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• Quantum Entanglement dependence on bifurcations and scars in non autonomous systems. The case of Quantum Kicked Top
• Classical Dynamics of Quantum Entanglement
• Phase transitions of the Dicke model: a unified perspective
• Scattering induced dynamical entanglement and the quantum-classical correspondence
• Entanglement dynamics via coherent-state propagators
• Statistical bounds on the dynamical production of entanglement
• Entanglement dynamics via semiclassical propagators in systems of two spins
• Decoherence in regular systems
• Entanglement dynamics of spins using a few complex trajectories