Entanglement in helium

Abstract

Using a configuration-interaction variational method, we accurately compute the reduced, single-electron von Neumann entropy for several low-energy, singlet and triplet eigenstates of helium atom. We estimate the amount of electron-electron orbital entanglement for such eigenstates and show that it decays with energy.

5 pages, 2 figures, added references and discussion

References in corpus (5)

• Environment-Assisted Quantum Walks in Photosynthetic Energy Transfer
• General criterion for the entanglement of two indistinguishable particles
• Essential entanglement for atomic and molecular physics
• Entanglement dynamics of electron-electron scattering in low-dimensional semiconductor systems
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Cited by in corpus (21)

• Indistinguishability of elementary systems as resource for quantum information processing
• Quantum entanglement of identical particles by standard information-theoretic notions
• Shannon Information Entropy in Position Space for Two-Electron Atomic Systems
• Dealing with indistinguishable particles and their entanglement
• Universality of Schmidt decomposition and particle identity
• Entanglement in N-harmonium: bosons and fermions
• Entanglement and the Born-Oppenheimer approximation in an exactly solvable quantum many-body system
• Quantification of linear entropy for quantum entanglement in He, H- and Ps- ions using highly-correlated Hylleraas functions
• Entanglement entropies in the ground states of helium-like atoms
• Quantum entanglement for two electrons in the excited states of helium-like systems
• Entanglement between electronic and vibrational degrees of freedom in a laser-driven molecular system
• Quantification of entanglement entropy in helium by the Schmidt-Slater decomposition method
• Entanglement robustness via spatial deformation of identical particle wave functions
• Magnetic alteration of entanglement in two-electron quantum dots
• Quantification of Entanglement Entropies for Doubly Excited States in Helium
• Indistinguishability-enhanced entanglement recovery by spatially localized operations and classical communication
• Hydrogenic entanglement
• Hanbury Brown-Twiss Effect with Wave Packets
• Bipartite correlations in quantum resonance states
• Quantum entanglement of two harmonically trapped dipolar particles
• Entanglement properties of bound and resonant few-body states