Scalable Entanglement Certification via Quantum Communication
(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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- author
- Bakhshinezhad, Pharnam ; Mehboudi, Mohammad ; Carceller, Carles Roch I. LU and Tavakoli, Armin LU
- organization
- publishing date
- 2024-04
- 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}}, }