The quantum Galileo ramp: entangling many-body bound states with propagative modes

Details The quantum Galileo ramp: entangling many-body bound states with propagative modes The quantum Galileo ramp: entangling many-body bound states with propagative modes

2011-12-21

arxiv.org/abs/1112.5013v2

Physics

Condensed Matter

Quantum Gases

4+10 pages, 5+8 figures

Scientific paper

The quantum evolution of a cloud of bosons initially localized on part of a one dimensional optical lattice and suddenly subjected to a linear ramp is studied. The main remarkable effects of this realistic setup are revealed using analytical and numerical methods. Only part of the particles are ejected for a high enough ramp, while the others remain self-trapped. Then, the trapped density profile displays rich dynamics with Josephson-like oscillations around a plateau. This setup, by coupling bound states to propagative modes, creates two diverging condensates for which the entanglement is computed and related to the equilibrium one. Further, we address the role of integrability on the entanglement and the damping and thermalization of simple observables.

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