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Scalable Entanglement Certification via Quantum Communication

Bakhshinezhad, Pharnam ; Mehboudi, Mohammad ; Carceller, Carles Roch I. LU orcid and Tavakoli, Armin LU (2024) In PRX Quantum 5(2).
Abstract

Harnessing the advantages of shared entanglement for sending quantum messages often requires the implementation of complex two-particle entangled measurements. We investigate entanglement advantages in protocols that use only the simplest two-particle measurements, namely, product measurements. For experiments in which only the dimension of the message is known, we show that robust entanglement advantages are possible but that they are fundamentally limited by Einstein-Podolsky-Rosen steering. Subsequently, we propose a natural extension of the standard scenario for these experiments and show that it circumvents this limitation. This leads us to prove entanglement advantages from every entangled two-qubit Werner state, evidence its... (More)

Harnessing the advantages of shared entanglement for sending quantum messages often requires the implementation of complex two-particle entangled measurements. We investigate entanglement advantages in protocols that use only the simplest two-particle measurements, namely, product measurements. For experiments in which only the dimension of the message is known, we show that robust entanglement advantages are possible but that they are fundamentally limited by Einstein-Podolsky-Rosen steering. Subsequently, we propose a natural extension of the standard scenario for these experiments and show that it circumvents this limitation. This leads us to prove entanglement advantages from every entangled two-qubit Werner state, evidence its generalization to high-dimensional systems, and establish a connection to quantum teleportation. Our results reveal the power of product measurements for generating quantum correlations in entanglement-assisted communication and they pave the way for practical semi-device-independent entanglement certification well beyond the constraints of Einstein-Podolsky-Rosen steering.

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Please use this url to cite or link to this publication:
author
; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
PRX Quantum
volume
5
issue
2
article number
020319
publisher
American Physical Society
external identifiers
  • scopus:85191410478
ISSN
2691-3399
DOI
10.1103/PRXQuantum.5.020319
language
English
LU publication?
yes
id
6f44dd54-afe8-4c33-ac3a-ff0b655055eb
date added to LUP
2024-05-03 14:11:06
date last changed
2024-05-03 14:12:08
@article{6f44dd54-afe8-4c33-ac3a-ff0b655055eb,
  abstract     = {{<p>Harnessing the advantages of shared entanglement for sending quantum messages often requires the implementation of complex two-particle entangled measurements. We investigate entanglement advantages in protocols that use only the simplest two-particle measurements, namely, product measurements. For experiments in which only the dimension of the message is known, we show that robust entanglement advantages are possible but that they are fundamentally limited by Einstein-Podolsky-Rosen steering. Subsequently, we propose a natural extension of the standard scenario for these experiments and show that it circumvents this limitation. This leads us to prove entanglement advantages from every entangled two-qubit Werner state, evidence its generalization to high-dimensional systems, and establish a connection to quantum teleportation. Our results reveal the power of product measurements for generating quantum correlations in entanglement-assisted communication and they pave the way for practical semi-device-independent entanglement certification well beyond the constraints of Einstein-Podolsky-Rosen steering.</p>}},
  author       = {{Bakhshinezhad, Pharnam and Mehboudi, Mohammad and Carceller, Carles Roch I. and Tavakoli, Armin}},
  issn         = {{2691-3399}},
  language     = {{eng}},
  number       = {{2}},
  publisher    = {{American Physical Society}},
  series       = {{PRX Quantum}},
  title        = {{Scalable Entanglement Certification via Quantum Communication}},
  url          = {{http://dx.doi.org/10.1103/PRXQuantum.5.020319}},
  doi          = {{10.1103/PRXQuantum.5.020319}},
  volume       = {{5}},
  year         = {{2024}},
}