Secure Communication based on Quantum Cryptography: Difference between revisions

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On October 8, 2008 SECOQC was launched in Vienna.<ref>{{cite news|url=http://news.bbc.co.uk/1/hi/sci/tech/7661311.stm|title='Unbreakable' encryption unveiled|website=BBC News|date=9 October 2008}}</ref>

== Limitations of classical quantum cryptography ==

[[Quantum cryptography]], usually known as [[quantum key distribution]] (QKD) provides powerful security. But it has some limitations. Following no-cloning theorem, QKD only can provide one-to-one connections. So the number of links will increase <math>N(N-1)/2</math> as <math>N</math> represents the number of nodes. If a node wants to participate into the QKD network, it will cause some issues like constructing quantum communication line. To overcome these issues, SECOQC was started.

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== References ==

* Andreas Poppe, Momtchil Peev, Oliver Maurhart, "Outline of the SECOQC Quantum-Key-Distribution Network in Vienna", Apr 2008, International Journal of Quantum Information

* Momtchil Peev M., Christoph Pacher C., AndreasAlleaume, HappeR., ThomasHappe LorunserA., AndreasLorunser PoppeT., ThomasPoppe ThemenA., AntonThemel T., Zeilinger A, "The SECOQC quantum key distribution network in Vienna", July 2009, New Journal of Physics, Volume 11

* Dianati, M. Alleaume, R., "Transport Layer Protocols for the Secoqc Quantum Key Distribution (QKD) Network, Local Computer Networks", 2007. LCN 2007. 32nd IEEE Conference on

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== External links ==

* [http://www.secoqc.net/ Homepage of SECOQC]

* [https://web.archive.org/web/20040603140332/http://security.itworld.com/4361/040517euechelon/page_1.html E.U. seeks quantum cryptography response to Echelon] [[ITworld]]