Degenerate detectors are unable to harvest spacelike entanglement

Pozas-Kerstjens, Alejandro and 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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Abstract

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
Identification Number: 10.1103/PhysRevD.95.105009
Depositing User: Eprints, Support
Date Deposited: 28 Jun 2017 11:02
Last Modified: 28 Jun 2017 14:36
URI: http://eprints.nottingham.ac.uk/id/eprint/43838

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