High-dimensional entanglement certification

Zixin Huang; Lorenzo Maccone; Akib Karim; Chiara Macchiavello; Robert J. Chapman; Alberto Peruzzo

doi:10.1038/srep27637

High-dimensional entanglement certification

Zixin Huang, Lorenzo Maccone, Akib Karim, Chiara Macchiavello, Robert J. Chapman, Alberto Peruzzo^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

12 Citations (Scopus)

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Abstract

Quantum entanglement is the ability of joint quantum systems to possess global properties (correlation among systems) even when subsystems have no definite individual property. Whilst the 2-dimensional (qubit) case is well-understood, currently, tools to characterise entanglement in high dimensions are limited. We experimentally demonstrate a new procedure for entanglement certification that is suitable for large systems, based entirely on information-theoretics. It scales more efficiently than Bell's inequality and entanglement witness. The method we developed works for arbitrarily large system dimension d and employs only two local measurements of complementary properties. This procedure can also certify whether the system is maximally entangled. We illustrate the protocol for families of bipartite states of qudits with dimension up to 32 composed of polarisation-entangled photon pairs.

Original language	English
Article number	27637
Pages (from-to)	1-7
Number of pages	7
Journal	Scientific Reports
Volume	6
DOIs	https://doi.org/10.1038/srep27637
Publication status	Published - 17 Jun 2016
Externally published	Yes

Bibliographical note

Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.

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10.1038/srep27637Licence: CC BY

Publisher version (open access)Final published version, 1.15 MBLicence: CC BY

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title = "High-dimensional entanglement certification",

abstract = "Quantum entanglement is the ability of joint quantum systems to possess global properties (correlation among systems) even when subsystems have no definite individual property. Whilst the 2-dimensional (qubit) case is well-understood, currently, tools to characterise entanglement in high dimensions are limited. We experimentally demonstrate a new procedure for entanglement certification that is suitable for large systems, based entirely on information-theoretics. It scales more efficiently than Bell's inequality and entanglement witness. The method we developed works for arbitrarily large system dimension d and employs only two local measurements of complementary properties. This procedure can also certify whether the system is maximally entangled. We illustrate the protocol for families of bipartite states of qudits with dimension up to 32 composed of polarisation-entangled photon pairs.",

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T1 - High-dimensional entanglement certification

AU - Huang, Zixin

AU - Maccone, Lorenzo

AU - Karim, Akib

AU - Macchiavello, Chiara

AU - Chapman, Robert J.

AU - Peruzzo, Alberto

N1 - Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.

PY - 2016/6/17

Y1 - 2016/6/17

N2 - Quantum entanglement is the ability of joint quantum systems to possess global properties (correlation among systems) even when subsystems have no definite individual property. Whilst the 2-dimensional (qubit) case is well-understood, currently, tools to characterise entanglement in high dimensions are limited. We experimentally demonstrate a new procedure for entanglement certification that is suitable for large systems, based entirely on information-theoretics. It scales more efficiently than Bell's inequality and entanglement witness. The method we developed works for arbitrarily large system dimension d and employs only two local measurements of complementary properties. This procedure can also certify whether the system is maximally entangled. We illustrate the protocol for families of bipartite states of qudits with dimension up to 32 composed of polarisation-entangled photon pairs.

AB - Quantum entanglement is the ability of joint quantum systems to possess global properties (correlation among systems) even when subsystems have no definite individual property. Whilst the 2-dimensional (qubit) case is well-understood, currently, tools to characterise entanglement in high dimensions are limited. We experimentally demonstrate a new procedure for entanglement certification that is suitable for large systems, based entirely on information-theoretics. It scales more efficiently than Bell's inequality and entanglement witness. The method we developed works for arbitrarily large system dimension d and employs only two local measurements of complementary properties. This procedure can also certify whether the system is maximally entangled. We illustrate the protocol for families of bipartite states of qudits with dimension up to 32 composed of polarisation-entangled photon pairs.

U2 - 10.1038/srep27637

DO - 10.1038/srep27637

M3 - Article

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SN - 2045-2322

VL - 6

SP - 1

EP - 7

JO - Scientific Reports

JF - Scientific Reports

M1 - 27637

ER -

High-dimensional entanglement certification

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