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arXiv · 1705.04341

All coherent field states entangle equally

Petar Simidzija·Eduardo Martin-Martinez
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Abstract

We analyze the interactions of particle detectors with coherent states of a free scalar field. We find that the eigenvalues of the post-interaction density matrices of i) a single detector, ii) two detectors, and iii) the partial transpose of the latter, are all independent of which coherent state the field was in. A consequence of these results is that a detector pair can harvest the same amount of entanglement from any coherent field state as from the vacuum.

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Petar Simidzija, Eduardo Martin-Martinez. 2017-05-11. All coherent field states entangle equally. https://doi.org/10.1103/physrevd.96.025020

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