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Article: Proof-of-principle experimental realization of a qubit-like qudit-based quantum key distribution scheme

TitleProof-of-principle experimental realization of a qubit-like qudit-based quantum key distribution scheme
Authors
Issue Date2018
PublisherInstitute of Physics Publishing Ltd..
Citation
Quantum Science and Technology, 2018, v. 3 n. 2, p. 025006:1-025006:7 How to Cite?
AbstractIn comparison to qubit-based protocols, qudit-based quantum key distribution ones generally allow two cooperative parties to share unconditionally secure keys under a higher channel noise. However, it is very hard to prepare and measure the required quantum states in qudit-based protocols in general. One exception is the recently proposed highly error tolerant qudit-based protocol known as the Chau15 (Chau 2015 Phys. Rev. A 92 062324). Remarkably, the state preparation and measurement in this protocol can be done relatively easily since the required states are phase encoded almost like the diagonal basis states of a qubit. Here we report the first proof-of-principle demonstration of the Chau15 protocol. One highlight of our experiment is that its post-processing is based on practical one-way manner, while the original proposal in Chau (2015 Phys. Rev. A 92 062324) relies on complicated two-way post-processing, which is a great challenge in experiment. In addition, by manipulating time-bin qudit and measurement with a variable delay interferometer, our realization is extensible to qudit with high-dimensionality and confirms the experimental feasibility of the Chau15 protocol.
Persistent Identifierhttp://hdl.handle.net/10722/251794
ISSN
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorWang, S-
dc.contributor.authorYin, ZQ-
dc.contributor.authorChau, HF-
dc.contributor.authorChen, W-
dc.contributor.authorWang, C-
dc.contributor.authorGuo, GC-
dc.contributor.authorHan, ZF-
dc.date.accessioned2018-03-19T07:01:21Z-
dc.date.available2018-03-19T07:01:21Z-
dc.date.issued2018-
dc.identifier.citationQuantum Science and Technology, 2018, v. 3 n. 2, p. 025006:1-025006:7-
dc.identifier.issn2058-9565-
dc.identifier.urihttp://hdl.handle.net/10722/251794-
dc.description.abstractIn comparison to qubit-based protocols, qudit-based quantum key distribution ones generally allow two cooperative parties to share unconditionally secure keys under a higher channel noise. However, it is very hard to prepare and measure the required quantum states in qudit-based protocols in general. One exception is the recently proposed highly error tolerant qudit-based protocol known as the Chau15 (Chau 2015 Phys. Rev. A 92 062324). Remarkably, the state preparation and measurement in this protocol can be done relatively easily since the required states are phase encoded almost like the diagonal basis states of a qubit. Here we report the first proof-of-principle demonstration of the Chau15 protocol. One highlight of our experiment is that its post-processing is based on practical one-way manner, while the original proposal in Chau (2015 Phys. Rev. A 92 062324) relies on complicated two-way post-processing, which is a great challenge in experiment. In addition, by manipulating time-bin qudit and measurement with a variable delay interferometer, our realization is extensible to qudit with high-dimensionality and confirms the experimental feasibility of the Chau15 protocol.-
dc.languageeng-
dc.publisherInstitute of Physics Publishing Ltd..-
dc.relation.ispartofQuantum Science and Technology-
dc.rightsQuantum Science and Technology. Copyright © Institute of Physics Publishing Ltd..-
dc.rightsThis is an author-created, un-copyedited version of an article published in [insert name of journal]. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at http://dx.doi.org/[insert DOI].-
dc.rightsThis work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.-
dc.titleProof-of-principle experimental realization of a qubit-like qudit-based quantum key distribution scheme-
dc.typeArticle-
dc.identifier.emailChau, HF: hfchau@hku.hk-
dc.identifier.authorityChau, HF=rp00669-
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1088/2058-9565/aaace4-
dc.identifier.hkuros284481-
dc.identifier.volume3-
dc.identifier.issue2-
dc.identifier.spage025006:1-
dc.identifier.epage025006:7-
dc.identifier.isiWOS:000427065700001-
dc.publisher.placeUnited Kingdom-

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