Teleportation fidelity as a probe of sub-Planck phase-space structure

Scott, A.J. and Caves, C.M. (2008) Teleportation fidelity as a probe of sub-Planck phase-space structure. Annals of Physics, 323 11: 2685-2708. doi:10.1016/j.aop.2008.01.007

Author Scott, A.J.
Caves, C.M.
Title Teleportation fidelity as a probe of sub-Planck phase-space structure
Journal name Annals of Physics   Check publisher's open access policy
ISSN 0003-4916
Publication date 2008-11-01
Sub-type Article (original research)
DOI 10.1016/j.aop.2008.01.007
Open Access Status
Volume 323
Issue 11
Start page 2685
End page 2708
Total pages 24
Editor Wilczek, F.
Place of publication United States
Publisher Academic Press
Language eng
Subject C1
020604 Quantum Optics
970102 Expanding Knowledge in the Physical Sciences
Abstract We investigate the connection between sub-Planck structure in the Wigner function and the output fidelity of continuous-variable teleportation protocols. When the teleporting parties share a two-mode squeezed state as an entangled resource, high fidelity in the output state requires a squeezing large enough that the smallest sub-Planck structures in an input pure state are teleported faithfully. We formulate this relationship, which leads to an explicit relation between the fine-scale structure in the Wigner function and large-scale extent of the Wigner function, and we treat specific examples, including coherent, number, and random states and states produced by chaotic dynamics. We generalize the pure-state results to teleportation of mixed states.
Keyword Foundations of quantum mechanics
Measurement theory
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: 2009 Higher Education Research Data Collection
School of Mathematics and Physics
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Citation counts: TR Web of Science Citation Count  Cited 9 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 8 times in Scopus Article | Citations
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Created: Sat, 28 Mar 2009, 01:19:47 EST by Ruth Forrest on behalf of School of Mathematics & Physics