Entanglement harvesting from the electromagnetic vacuum with hydrogenlike atoms

2016/05/31 by Alejandro Pozas-Kerstjens, Eduardo Martín-Martínez, Eduardo Martin-Martinez · 9 citations
Mathematics · Physics and Astronomy · #Angular momentum #Electromagnetic field #Geometry #Mathematics #Orbital Angular Momentum in Optics #Physics #Quantum #Quantum Electrodynamics and Casimir Effect #Quantum Mechanics and Applications #Quantum electrodynamics #Quantum entanglement #Quantum mechanics #Scalar (mathematics) #Scalar field #gr-qc #hep-th #quant-ph

paper · pdf · doi:10.1103/physrevd.94.064074

published as Phys. Rev. D 94, 064074 (2016) · 28 pages (12 pages manuscript + 16 pages of appendices), 6 figures. RevTeX 4.1. V4: A few minor typos corrected

openalex publication_date 2016/09/28 · arxiv created 2017/05/12 · arxiv updated 2017/05/15 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We study how two fully featured hydrogenlike atoms harvest entanglement from the electromagnetic field vacuum, even when the atoms are spacelike separated. We compare the electromagnetic case---qualitatively and quantitatively---with previous results that used scalar fields and featureless, idealized atomic models. Our study reveals the new traits that emerge when we relax these idealizations, such as anisotropies in entanglement harvesting and the effect of exchange of angular momentum. We show that, under certain circumstances, relaxing previous idealizations makes vacuum entanglement harvesting more efficient.

Citations

• Extraction of timelike entanglement from the quantum vacuum
• Quantum Fields in Curved Space
• Generation of atom-atom correlations inside and outside the mutual light cone
• Entanglement of Formation of an Arbitrary State of Two Qubits
• Quantum Energy Teleportation in Spin Chain Systems
• Extracting Past-Future Vacuum Correlations Using Circuit QED
• From Lorenz to Coulomb and other explicit gauge transformations
• Information transmission without energy exchange
• Particle creation by black holes

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• Direct measurement of the two-point function in quantum fields
• Degenerate detectors are unable to harvest spacelike entanglement
• Gaussian states in quantum field theory: Exact representations of relative phase in superpositions of Gaussian states