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HIGH-DIMENSIONAL QUANTUM COMMUNICATION COMPLEXITY BEYOND STRATEGIES BASED ON BELLS THEOREM

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dc.creatorGUSTAVO CAÑAS CARDONA
dc.date2018
dc.date.accessioned2025-01-10T15:29:32Z
dc.date.available2025-01-10T15:29:32Z
dc.date.issued2018
dc.description.abstractQUANTUM RESOURCES CAN IMPROVE COMMUNICATION COMPLEXITY PROBLEMS (CCPS) BEYOND THEIR CLASSICAL CONSTRAINTS. ONE QUANTUM APPROACH IS TO SHARE ENTANGLEMENT AND CREATE CORRELATIONS VIOLATING A BELL INEQUALITY, WHICH CAN THEN ASSIST CLASSICAL COMMUNICATION. A SECOND APPROACH IS TO RESORT SOLELY TO THE PREPARATION, TRANSMISSION, AND MEASUREMENT OF A SINGLE QUANTUM SYSTEM, IN OTHER WORDS, QUANTUM COMMUNICATION. HERE, WE SHOW THE ADVANTAGES OF THE LATTER OVER THE FORMER IN HIGH-DIMENSIONAL HILBERT SPACE. WE FOCUS ON A FAMILY OF CCPS, BASED ON FACET BELL INEQUALITIES, STUDY THE ADVANTAGE OF HIGH-DIMENSIONAL QUANTUM COMMUNICATION, AND REALIZE SUCH QUANTUM COMMUNICATION STRATEGIES USING UP TO TEN-DIMENSIONAL SYSTEMS. THE EXPERIMENT DEMONSTRATES, FOR GROWING DIMENSION, AN INCREASING ADVANTAGE OVER QUANTUM STRATEGIES BASED ON BELL INEQUALITY VIOLATION. FOR SUFFICIENTLY HIGH DIMENSIONS, QUANTUM COMMUNICATION ALSO SURPASSES THE LIMITATIONS OF THE POSTQUANTUM BELL CORRELATIONS OBEYING ONLY LOCALITY IN THE MACROSCOPIC LIMIT. WE FIND THAT THE ADVANTAGES ARE TIED TO THE USE OF MEASUREMENTS THAT ARE NOT RANK-ONE PROJECTIVE, AND PROVIDE AN EXPERIMENTAL SEMI-DEVICE-INDEPENDENT FALSIFICATION OF SUCH MEASUREMENTS IN HILBERT SPACE DIMENSION SIX.
dc.formatapplication/pdf
dc.identifier.doi10.1103/PhysRevLett.121.150504
dc.identifier.issn1079-7114
dc.identifier.issn0031-9007
dc.identifier.urihttps://repositorio.ubiobio.cl/handle/123456789/12270
dc.languagespa
dc.publisherPHYSICAL REVIEW LETTERS
dc.relation.uri10.1103/PhysRevLett.121.150504
dc.rightsPUBLICADA
dc.titleHIGH-DIMENSIONAL QUANTUM COMMUNICATION COMPLEXITY BEYOND STRATEGIES BASED ON BELLS THEOREM
dc.typeARTÍCULO
dspace.entity.typePublication
ubb.EstadoPUBLICADA
ubb.Otra ReparticionDEPARTAMENTO DE FISICA
ubb.SedeCONCEPCIÓN
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