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  • Wengerowsky, SoerenAustrian Acad Sci, Inst Quantum Opt & Quantum Informat Vienna, A-1090 Vienna, Austria.;Vienna Ctr Quantum Sci & Technol, A-1090 Vienna, Austria. (author)

Entanglement distribution over a 96-km-long submarine optical fiber

  • Article/chapterEnglish2019

Publisher, publication year, extent ...

  • 2019-03-14
  • NATL ACAD SCIENCES,2019
  • printrdacarrier

Numbers

  • LIBRIS-ID:oai:DiVA.org:kth-249792
  • https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-249792URI
  • https://doi.org/10.1073/pnas.1818752116DOI

Supplementary language notes

  • Language:English
  • Summary in:English

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Classification

  • Subject category:ref swepub-contenttype
  • Subject category:art swepub-publicationtype

Notes

  • QC 20190424
  • Quantum entanglement is one of the most extraordinary effects in quantum physics, with many applications in the emerging field of quantum information science. In particular, it provides the foundation for quantum key distribution (QKD), which promises a conceptual leap in information security. Entanglement-based QKD holds great promise for future applications owing to the possibility of device-independent security and the potential of establishing global-scale quantum repeater networks. While other approaches to QKD have already reached the level of maturity required for operation in absence of typical laboratory infrastructure, comparable field demonstrations of entanglement-based QKD have not been performed so far. Here, we report on the successful distribution of polarization-entangled photon pairs between Malta and Sicily over 96 km of submarine optical telecommunications fiber. We observe around 257 photon pairs per second, with a polarization visibility above 90%. Our results show that QKD based on polarization entanglement is now indeed viable in long-distance fiber links. This field demonstration marks the longest-distance distribution of entanglement in a deployed telecommunications network and demonstrates an international submarine quantum communication channel. This opens up myriad possibilities for future experiments and technological applications using existing infrastructure.

Subject headings and genre

Added entries (persons, corporate bodies, meetings, titles ...)

  • Joshi, Siddarth KoduruAustrian Acad Sci, Inst Quantum Opt & Quantum Informat Vienna, A-1090 Vienna, Austria.;Vienna Ctr Quantum Sci & Technol, A-1090 Vienna, Austria.;HH Wills Phys Lab, Quantum Engn Technol Labs, Bristol BS8 1FD, Avon, England.;Univ Bristol, Dept Elect & Elect Engn, Bristol BS8 1UB, Avon, England. (author)
  • Steinlechner, FabianAustrian Acad Sci, Inst Quantum Opt & Quantum Informat Vienna, A-1090 Vienna, Austria.;Vienna Ctr Quantum Sci & Technol, A-1090 Vienna, Austria.;Fraunhofer Inst Appl Opt & Precis Engn IOF Jena, D-07745 Jena, Germany.;Friedrich Schiller Univ Jena, Abbe Ctr Photon, D-07745 Jena, Germany. (author)
  • Zichi, JulienKTH,Kvant- och biofotonik,Single Quantum BV, NL-2628 CJ Delft, Netherlands.(Swepub:kth)u1d7oy87 (author)
  • Dobrovolskiy, Sergiy M.Single Quantum BV, NL-2628 CJ Delft, Netherlands. (author)
  • van der Molen, ReneSingle Quantum BV, NL-2628 CJ Delft, Netherlands. (author)
  • Los, Johannes W. N.Single Quantum BV, NL-2628 CJ Delft, Netherlands. (author)
  • Zwiller, ValKTH,Kvant- och biofotonik,Single Quantum BV, NL-2628 CJ Delft, Netherlands.(Swepub:kth)u1ummq2v (author)
  • Versteegh, Marijn A. M.KTH,Kvant- och biofotonik(Swepub:kth)u1dzuo8r (author)
  • Mura, AlbertoIst Nazl Ric Metrol, I-10135 Turin, Italy. (author)
  • Calonico, DavideIst Nazl Ric Metrol, I-10135 Turin, Italy. (author)
  • Inguscio, MassimoEuropean Lab Nonlinear Spect LENS, I-50019 Sesto Fiorentino, Italy.;Univ Florence, Dept Phys & Astron, I-50019 Sesto Fiorentino, Italy.;CNR, I-00185 Rome, Italy. (author)
  • Huebel, HannesAustrian Inst Technol, Ctr Digital Safety & Secur, A-1210 Vienna, Austria. (author)
  • Bo, LiuAustrian Acad Sci, Inst Quantum Opt & Quantum Informat Vienna, A-1090 Vienna, Austria.;Vienna Ctr Quantum Sci & Technol, A-1090 Vienna, Austria.;Natl Univ Def Technol, Coll Adv Interdisciplinary Studies, Changsha 410073, Hunan, Peoples R China. (author)
  • Scheidl, ThomasAustrian Acad Sci, Inst Quantum Opt & Quantum Informat Vienna, A-1090 Vienna, Austria.;Univ Vienna, Quantum Opt Quantum Nanophys & Quantum Informat, A-1090 Vienna, Austria. (author)
  • Zeilinger, AntonAustrian Acad Sci, Inst Quantum Opt & Quantum Informat Vienna, A-1090 Vienna, Austria.;Univ Vienna, Quantum Opt Quantum Nanophys & Quantum Informat, A-1090 Vienna, Austria. (author)
  • Xuereb, AndreUniv Malta, Dept Phys, MSD-2080 Msida, Malta. (author)
  • Ursin, RupertAustrian Acad Sci, Inst Quantum Opt & Quantum Informat Vienna, A-1090 Vienna, Austria.;Vienna Ctr Quantum Sci & Technol, A-1090 Vienna, Austria. (author)
  • Austrian Acad Sci, Inst Quantum Opt & Quantum Informat Vienna, A-1090 Vienna, Austria.;Vienna Ctr Quantum Sci & Technol, A-1090 Vienna, Austria.Austrian Acad Sci, Inst Quantum Opt & Quantum Informat Vienna, A-1090 Vienna, Austria.;Vienna Ctr Quantum Sci & Technol, A-1090 Vienna, Austria.;HH Wills Phys Lab, Quantum Engn Technol Labs, Bristol BS8 1FD, Avon, England.;Univ Bristol, Dept Elect & Elect Engn, Bristol BS8 1UB, Avon, England. (creator_code:org_t)

Related titles

  • In:Proceedings of the National Academy of Sciences of the United States of America: NATL ACAD SCIENCES116:14, s. 6684-66880027-84241091-6490

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