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Quantum key distribution session with 16-dimensional photonic states
Center for optics and photonics,Univesity of Concepcion.
(Center for optics and photonics, Univesity of Concepcion)
(Center for optics and photonics,Univesity of Concepcion)
(Center for optics and photonics,Univesity of Concepcion)
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2013 (English)In: Scientific Reports, ISSN 2045-2322, no 3, 2316- p.Article in journal (Refereed) Published
Abstract [en]

The secure transfer of information is an important problem in modern telecommunications. Quantum key distribution (QKD) provides a solution to this problem by using individual quantum systems to generate correlated bits between remote parties, that can be used to extract a secret key. QKD with D-dimensional quantum channels provides security advantages that grow with increasing D. However, the vast majority of QKD implementations has been restricted to two dimensions. Here we demonstrate the feasibility of using higher dimensions for real-world quantum cryptography by performing, for the first time, a fully automated QKD session based on the BB84 protocol with 16-dimensional quantum states. Information is encoded in the single-photon transverse momentum and the required states are dynamically generated with programmable spatial light modulators. Our setup paves the way for future developments in the field of experimental high-dimensional QKD.

Place, publisher, year, edition, pages
Nature Publishing Group, 2013. no 3, 2316- p.
National Category
Physical Sciences
Research subject
URN: urn:nbn:se:kth:diva-143347DOI: 10.1038/srep02316ISI: 000322433800006ScopusID: 2-s2.0-84881133105OAI: diva2:706314

QC 20140331

Available from: 2014-03-19 Created: 2014-03-19 Last updated: 2014-04-03Bibliographically approved

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