arXiv:1201.1445 · Physical Review A
Entanglement between an autoionizing system and a neighboring atom
A. Lukš, Jan Peřina, W. Leoński, Vlasta Peřinová
Abstract
Entanglement between two electrons belonging to an autoionization system and a neighbor two-level atom produced by the dipole-dipole interaction is studied. The entanglement is quantified using the quadratic negativity of a bipartite system including the continuum of states. Suitable conditions for the generation of highly entangled states of two electrons are revealed. Internal structure of the entanglement is elucidated using the spectral density of quadratic negativity.