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

* Peev M., Pacher C., Alleaume, R., Happe A., Lorunser T., Poppe A., Themel 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]]