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Degenerate detectors are unable to harvest spacelike entanglement

Pozas-Kerstjens, Alejandro; Louko, Jorma; Martín-Martínez, Eduardo

Authors

Alejandro Pozas-Kerstjens

Eduardo Martín-Martínez



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.

Journal Article Type Article
Publication Date May 30, 2017
Journal Physical Review D
Print ISSN 2470-0010
Electronic ISSN 2470-0029
Publisher American Physical Society
Peer Reviewed Peer Reviewed
Volume 95
Issue 10
APA6 Citation Pozas-Kerstjens, A., Louko, J., & Martín-Martínez, E. (2017). Degenerate detectors are unable to harvest spacelike entanglement. Physical Review D, 95(10), doi:10.1103/PhysRevD.95.105009
DOI https://doi.org/10.1103/PhysRevD.95.105009
Publisher URL https://doi.org/10.1103/PhysRevD.95.105009
Copyright Statement Copyright information regarding this work can be found at the following address: http://eprints.nottingh.../end_user_agreement.pdf

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Copyright Statement
Copyright information regarding this work can be found at the following address: http://eprints.nottingham.ac.uk/end_user_agreement.pdf





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