Secure Communication based on Quantum Cryptography: Difference between revisions

Revision as of 14:31, 27 December 2013

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== 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 1:1 connection. So the number of links will increase N(N-1)/2 as N 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 thisthese issues, SECOQC was started.

== Brief architecture of SECOQC network ==

SECOQC network architecture can by divided byinto two parts.: Trustedtrusted private networknetworks and quantum networknetworks consistedconnected withvia QBBs (Quantum Back BoneBackbones). PrivateThe networkprivate isnetworks are conventional networknetworks with end-nodes and a QBB. Each QBB providesenables quantum channel communication betweenwith QBBs.another QBB and consists of a number of QKD devices that are connected with other QKD devices inover 1-to-1 connectionconnections.

From this, SECOQC can provide easier registration of new end-node in QKD network, and quick recovery from threateningsthreats on quantum channel links.

== See also ==