Entanglement entropies in the ground states of helium-like atoms

Abstract

We examine the entanglement in the ground states of helium and helium-like ions using an original Hylleraas expansion. The von Neumann and linear entropies of the reduced density matrix are accurately computed by performing the Schmidt decomposition of the S singlet spatial wavefunctions. The results presented are more accurate than currently available in published literature.

6 pages, 1 figure

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Cited by in corpus (6)

• Shannon Information Entropy in Position Space for Two-Electron Atomic Systems
• Quantum entanglement for two electrons in the excited states of helium-like systems
• Entanglement between two spatially separated ultracold interacting Fermi gases
• Magnetic alteration of entanglement in two-electron quantum dots
• Quantification of Entanglement Entropies for Doubly Excited States in Helium
• Entanglement properties of bound and resonant few-body states