Non-equilibrium entanglement in a driven many-body spin-boson model
We study the entanglement dynamics in the externally-driven single-mode Dicke model in the thermodynamic limit, when the field is in resonance with the atoms. We compute the correlations in the atoms-field ground state by means of the density operator that represents the pure state of the universe a...
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| Veröffentlicht in: | Journal of physics. Conference series 2009-05, Vol.167 (1), p.012063 |
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| creator | Bastidas, Victor M Reina, John H Brandes, Tobias |
| description | We study the entanglement dynamics in the externally-driven single-mode Dicke model in the thermodynamic limit, when the field is in resonance with the atoms. We compute the correlations in the atoms-field ground state by means of the density operator that represents the pure state of the universe and the reduced density operator for the atoms, which results from taking the partial trace over the field coordinates. As a measure of bipartite entanglement, we calculate the linear entropy, from which we analyze the entanglement dynamics. In particular, we found a strong relation between the stability of the dynamical parameters and the reported entanglement. |
| doi_str_mv | 10.1088/1742-6596/167/1/012063 |
| format | Article |
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| subjects | Density Dynamic stability Entanglement Physics |
| title | Non-equilibrium entanglement in a driven many-body spin-boson model |
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