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Entanglement harvesting from the electromagnetic vacuum with hydrogenlike atoms
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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.
Forward citations
Cited by 3 Pith papers
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Probing holographic conformal field theories
In a holographic CFT on a cylinder, a qutrit Unruh-DeWitt detector harvests more mana when the dual bulk scalar uses standard (Δ+) quantization than alternate (Δ−) quantization.
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Can spacetime fluctuations generate entanglement between co-moving accelerated detectors?
Two uniformly accelerated Unruh-DeWitt detectors in nested Rindler frames harvest shift-independent entanglement from the Rindler vacuum whenever their trajectories are separated by any nonzero amount.
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Entanglement harvesting in quantum superposed spacetime
Concurrence for two Unruh-DeWitt detectors is computed in a superposition of two quotient Minkowski spacetimes, showing enhanced entanglement and an enlarged twisted-field entanglement region.
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