File Download
  Links for fulltext
     (May Require Subscription)
Supplementary

Article: Universal squash model for optical communications using linear optics and threshold detectors

TitleUniversal squash model for optical communications using linear optics and threshold detectors
Authors
KeywordsCoherent pulse
Current technology
Density matrix
Device models
Key generation rate
Issue Date2011
PublisherAmerican Physical Society. The Journal's web site is located at http://pra.aps.org
Citation
Physical Review A - Atomic, Molecular, And Optical Physics, 2011, v. 84 n. 2 How to Cite?
AbstractTransmission of photons through open-air or optical fibers is an important primitive in quantum-information processing. Theoretical descriptions of this process often consider single photons as information carriers and thus fail to accurately describe experimental implementations where any number of photons may enter a detector. It has been a great challenge to bridge this big gap between theory and experiments. One powerful method for achieving this goal is by conceptually squashing the received multiphoton states to single-photon states. However, until now, only a few protocols admit a squash model; furthermore, a recently proven no-go theorem appears to rule out the existence of a universal squash model. Here we show that a necessary condition presumed by all existing squash models is in fact too stringent. By relaxing this condition, we find that, rather surprisingly, a universal squash model actually exists for many protocols, including quantum key distribution, quantum state tomography, Bell's inequality testing, and entanglement verification. © 2011 American Physical Society.
Persistent Identifierhttp://hdl.handle.net/10722/139616
ISSN
2014 Impact Factor: 2.808
2015 SCImago Journal Rankings: 1.418
ISI Accession Number ID
Funding AgencyGrant Number
HKSAR RGCHKU 701007P
700709P
CRC program
CIFAR
NSERC
QuantumWorks
Funding Information:

We thank N. Lutkenhaus and K. Tamaki for enlightening discussion. This work was supported by HKSAR RGC Grants Nos. HKU 701007P and 700709P, the CRC program, CIFAR, NSERC, and QuantumWorks.

References
Grants

 

DC FieldValueLanguage
dc.contributor.authorFung, CHFen_HK
dc.contributor.authorChau, HFen_HK
dc.contributor.authorLo, HKen_HK
dc.date.accessioned2011-09-23T05:52:40Z-
dc.date.available2011-09-23T05:52:40Z-
dc.date.issued2011en_HK
dc.identifier.citationPhysical Review A - Atomic, Molecular, And Optical Physics, 2011, v. 84 n. 2en_HK
dc.identifier.issn1050-2947en_HK
dc.identifier.urihttp://hdl.handle.net/10722/139616-
dc.description.abstractTransmission of photons through open-air or optical fibers is an important primitive in quantum-information processing. Theoretical descriptions of this process often consider single photons as information carriers and thus fail to accurately describe experimental implementations where any number of photons may enter a detector. It has been a great challenge to bridge this big gap between theory and experiments. One powerful method for achieving this goal is by conceptually squashing the received multiphoton states to single-photon states. However, until now, only a few protocols admit a squash model; furthermore, a recently proven no-go theorem appears to rule out the existence of a universal squash model. Here we show that a necessary condition presumed by all existing squash models is in fact too stringent. By relaxing this condition, we find that, rather surprisingly, a universal squash model actually exists for many protocols, including quantum key distribution, quantum state tomography, Bell's inequality testing, and entanglement verification. © 2011 American Physical Society.en_HK
dc.languageengen_US
dc.publisherAmerican Physical Society. The Journal's web site is located at http://pra.aps.orgen_HK
dc.relation.ispartofPhysical Review A - Atomic, Molecular, and Optical Physicsen_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong Licenseen_US
dc.subjectCoherent pulse-
dc.subjectCurrent technology-
dc.subjectDensity matrix-
dc.subjectDevice models-
dc.subjectKey generation rate-
dc.titleUniversal squash model for optical communications using linear optics and threshold detectorsen_HK
dc.typeArticleen_HK
dc.identifier.emailChau, HF: hfchau@hku.hken_HK
dc.identifier.authorityChau, HF=rp00669en_HK
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1103/PhysRevA.84.020303en_HK
dc.identifier.scopuseid_2-s2.0-84860390360en_HK
dc.identifier.hkuros193641en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-84860390360&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume84en_HK
dc.identifier.issue2en_HK
dc.identifier.eissn1050-2947-
dc.identifier.isiWOS:000293972300001-
dc.publisher.placeUnited Statesen_HK
dc.relation.projectProperties And Applications Of Quantum Low Density Parity Check And Related Codes-
dc.identifier.scopusauthoridFung, CHF=8201367800en_HK
dc.identifier.scopusauthoridChau, HF=7005742276en_HK
dc.identifier.scopusauthoridLo, HK=7202085450en_HK

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats