Notes on teleportation in an expanding space

Feng, Jun, Yang, Wen-Li, Zhang, Yao-Zhong and Fan, Heng (2013) Notes on teleportation in an expanding space. Physics Letters B, 719 4-5: 430-434. doi:10.1016/j.physletb.2013.01.026

Author Feng, Jun
Yang, Wen-Li
Zhang, Yao-Zhong
Fan, Heng
Title Notes on teleportation in an expanding space
Journal name Physics Letters B   Check publisher's open access policy
ISSN 0370-2693
Publication date 2013-02-01
Year available 2013
Sub-type Article (original research)
DOI 10.1016/j.physletb.2013.01.026
Open Access Status DOI
Volume 719
Issue 4-5
Start page 430
End page 434
Total pages 5
Place of publication Amsterdam, Netherlands
Publisher Elsevier
Language eng
Abstract We investigate the quantum teleportation between a conformal detector Alice and an inertial detector Bob in de Sitter space in two schemes, (i) one uses free scalar modes and (ii) one utilizes cavity to store qubit. We show that the fidelity of the teleportation is degraded for Bob in both cases. While the fidelity-loss is due to the Gibbons-Hawking effect associated with his cosmological horizon in the scheme (i), the entanglement decreases in the scheme (ii) because the ability to entangle the cavities is reduced by the spacetime curvature. With a cutoff at Planck-scale, comparing with the standard Bunch-Davies choice, we also show that the possible Planckian physics cause extra modifications to the fidelity of the teleportation protocol in both schemes
Keyword Astronomy & Astrophysics
Physics, Nuclear
Physics, Particles & Fields
Astronomy & Astrophysics
Q-Index Code C1
Q-Index Status Confirmed Code
Grant ID 2010CB922904
Institutional Status UQ
Additional Notes Available online: 17 January 2013.

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mathematics and Physics
Official 2014 Collection
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Citation counts: TR Web of Science Citation Count  Cited 5 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 4 times in Scopus Article | Citations
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