Entanglement and parametric resonance in driven quantum systems
arXiv:0910.1600 · doi:10.1103/PhysRevA.81.012316
Abstract
We study the relationship between entanglement and parametric resonance in a system of two coupled time-dependent oscillators. As a measure of bipartite entanglement, we calculate the linear entropy for the reduced density operator, from which we study the entanglement dynamics. In particular, we find that the bipartite entanglement increases in time up to a maximal mixing scenario, when the set of auxiliary dynamical parameters are under parametric resonance. Moreover, we obtain a closed relationship between the correlations in the ground state, the localisation of the Wigner function in phase space, and the localisation of the wave function of the total system.
10 pages, 5 figures
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Cited by in corpus (6)
- Nonequilibrium Quantum Phase Transitions in the Dicke Model
- Optomechanical circuits for nanomechanical continuous variable quantum state processing
- Ergodic-localized junctions in a periodically-driven spin chain
- Ergodic-localized junctions in periodically-driven systems
- Theory of parametric resonance for discrete time crystals in fully-connected spin-cavity systems
- Thermalization in parametrically driven coupled oscillators