All quantum states useful for teleportation are nonlocal resources

Daniel Cavalcanti, Antonio Acín, Nicolas Brunner, T. Vértesi

Research output: Contribution to journalArticle

39 Citations (Scopus)

Abstract

Understanding the relation between the different forms of inseparability in quantum mechanics is a longstanding problem in the foundations of quantum theory and has implications for quantum information processing. Here we make progress in this direction by establishing a direct link between quantum teleportation and Bell nonlocality. In particular, we show that all entangled states which are useful for teleportation are nonlocal resources, i.e., lead to deterministic violation of Bell's inequality. Our result also extends the phenomenon of superactivation of quantum nonlocality, recently proven by C. Palazuelos, and suggests that the latter might in fact be more general than initially thought.

Original languageEnglish
Article number042104
JournalPhysical Review A
Volume87
Issue number4
DOIs
Publication statusPublished - Apr 8 2013

Fingerprint

bells
resources
quantum theory
quantum mechanics

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

All quantum states useful for teleportation are nonlocal resources. / Cavalcanti, Daniel; Acín, Antonio; Brunner, Nicolas; Vértesi, T.

In: Physical Review A, Vol. 87, No. 4, 042104, 08.04.2013.

Research output: Contribution to journalArticle

Cavalcanti, Daniel ; Acín, Antonio ; Brunner, Nicolas ; Vértesi, T. / All quantum states useful for teleportation are nonlocal resources. In: Physical Review A. 2013 ; Vol. 87, No. 4.
@article{afe919914df946d29f607ebdb2a7d1ea,
title = "All quantum states useful for teleportation are nonlocal resources",
abstract = "Understanding the relation between the different forms of inseparability in quantum mechanics is a longstanding problem in the foundations of quantum theory and has implications for quantum information processing. Here we make progress in this direction by establishing a direct link between quantum teleportation and Bell nonlocality. In particular, we show that all entangled states which are useful for teleportation are nonlocal resources, i.e., lead to deterministic violation of Bell's inequality. Our result also extends the phenomenon of superactivation of quantum nonlocality, recently proven by C. Palazuelos, and suggests that the latter might in fact be more general than initially thought.",
author = "Daniel Cavalcanti and Antonio Ac{\'i}n and Nicolas Brunner and T. V{\'e}rtesi",
year = "2013",
month = "4",
day = "8",
doi = "10.1103/PhysRevA.87.042104",
language = "English",
volume = "87",
journal = "Physical Review A",
issn = "2469-9926",
publisher = "American Physical Society",
number = "4",

}

TY - JOUR

T1 - All quantum states useful for teleportation are nonlocal resources

AU - Cavalcanti, Daniel

AU - Acín, Antonio

AU - Brunner, Nicolas

AU - Vértesi, T.

PY - 2013/4/8

Y1 - 2013/4/8

N2 - Understanding the relation between the different forms of inseparability in quantum mechanics is a longstanding problem in the foundations of quantum theory and has implications for quantum information processing. Here we make progress in this direction by establishing a direct link between quantum teleportation and Bell nonlocality. In particular, we show that all entangled states which are useful for teleportation are nonlocal resources, i.e., lead to deterministic violation of Bell's inequality. Our result also extends the phenomenon of superactivation of quantum nonlocality, recently proven by C. Palazuelos, and suggests that the latter might in fact be more general than initially thought.

AB - Understanding the relation between the different forms of inseparability in quantum mechanics is a longstanding problem in the foundations of quantum theory and has implications for quantum information processing. Here we make progress in this direction by establishing a direct link between quantum teleportation and Bell nonlocality. In particular, we show that all entangled states which are useful for teleportation are nonlocal resources, i.e., lead to deterministic violation of Bell's inequality. Our result also extends the phenomenon of superactivation of quantum nonlocality, recently proven by C. Palazuelos, and suggests that the latter might in fact be more general than initially thought.

UR - http://www.scopus.com/inward/record.url?scp=84876122623&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84876122623&partnerID=8YFLogxK

U2 - 10.1103/PhysRevA.87.042104

DO - 10.1103/PhysRevA.87.042104

M3 - Article

AN - SCOPUS:84876122623

VL - 87

JO - Physical Review A

JF - Physical Review A

SN - 2469-9926

IS - 4

M1 - 042104

ER -