Erlangen 2018 – scientific programme

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A: Fachverband Atomphysik

A 13: Fundamentals

A 13.5: Talk

Monday, March 5, 2018, 17:45–18:00, K 1.011

Entanglement in doubly excited states of helium — •Alejandro Gonzalez Melan and Javier Madroñero Pabon — Physics department, Universidad del Valle, Cali, Colombia

We compute the entanglement of doubly excited states of helium below the 3rd and 4th ionization thresholds. For that purpose we use a planar representation of the helium atom. The amount of the entanglement tends to increase with energy and allows us to classify series of doubly excited states. We also discuss the effect of a peridic driving by an external field on entanglement. In particular, we focus on the entanglement for two-electron nondispersive wave packets in planar helium. These are quantum objects that propagate along periodic trajectories of the classical three-body Coulomb problem and they are formed by a near-resonantly periodic driving of the Zee configuration of helium.