Experimental hierarchy of two-qubit quantum correlations without state tomography.
Journal
Scientific reports
ISSN: 2045-2322
Titre abrégé: Sci Rep
Pays: England
ID NLM: 101563288
Informations de publication
Date de publication:
26 May 2023
26 May 2023
Historique:
received:
22
02
2023
accepted:
11
05
2023
medline:
27
5
2023
pubmed:
27
5
2023
entrez:
26
5
2023
Statut:
epublish
Résumé
A Werner state, which is the singlet Bell state affected by white noise, is a prototype example of states, which can reveal a hierarchy of quantum entanglement, steering, and Bell nonlocality by controlling the amount of noise. However, experimental demonstrations of this hierarchy in a sufficient and necessary way (i.e., by applying measures or universal witnesses of these quantum correlations) have been mainly based on full quantum state tomography, corresponding to measuring at least 15 real parameters of two-qubit states. Here we report an experimental demonstration of this hierarchy by measuring only six elements of a correlation matrix depending on linear combinations of two-qubit Stokes parameters. We show that our experimental setup can also reveal the hierarchy of these quantum correlations of generalized Werner states, which are any two-qubit pure states affected by white noise.
Identifiants
pubmed: 37237018
doi: 10.1038/s41598-023-35015-9
pii: 10.1038/s41598-023-35015-9
pmc: PMC10220071
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
8564Subventions
Organisme : Polish National Science Centre
ID : DEC-2019/34/A/ST2/00081
Informations de copyright
© 2023. The Author(s).
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