Degenerate detectors are unable to harvest spacelike entanglement

Pozas-Kerstjens, Alejandro, Louko, Jorma and Martín-Martínez, Eduardo (2017) Degenerate detectors are unable to harvest spacelike entanglement. Physical Review D, 95 (10). p. 105009. ISSN 2470-0029

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We show, under a very general set of assumptions, that pairs of identical particle detectors in spacelike separation, such as atomic probes, can only harvest entanglement from the vacuum state of a quantum field when they have a nonzero energy gap. Furthermore, we show that degenerate probes are strongly challenged to become entangled through their interaction through scalar and electromagnetic fields even in full light contact. We relate these results to previous literature on remote entanglement generation and entanglement harvesting, giving insight into the energy gap’s protective role against local noise, which prevents the detectors from getting entangled through the interaction with the field.

Item Type: Article
Schools/Departments: University of Nottingham, UK > Faculty of Science > School of Mathematical Sciences
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Depositing User: Eprints, Support
Date Deposited: 28 Jun 2017 11:02
Last Modified: 04 May 2020 18:47

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