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Quantum Cryptography

Submitted by 21232f297a57a5a... on Wed, 05/02/2007 - 11:00am

Quantum key distribution enables two parties to share a secret key that is information-theoretically secure. The key can be used in a cryptographic algorithm such as a one-time-pad to provide perfect secrecy for communication between a sender and a receiver. The importance of Quantum Cryptography (QC) for the future of ICT has been recognized worldwide, and the first commercial systems are available since a few years. However current systems are limited: they have low secret key rates, the integration into next-generation security architecture is still at an early stage, and the requisite quantum technology to allow quantum secured communication over more than 100 km distance remains to be developed.

Canada cannot expect to import working QC systems due to trade restrictions, nor can imported technology be fully trusted because of the risk of “backdoor” information leakage.

Our work focuses on:

  • the building of point-to-point QC links over optical fibres with unprecedented secret key rates for up to 100 km distance.
  • the integration of point-to-point QC links with high security encoding protocols and into existing (tele-)communication networks.
  • basic research into the building of a quantum relay and repeater to extend QC across Alberta and ultimately across the nation.

The link between the Institute for Quantum Information Science, the ATIPS laboratory , the Southern Alberta Institute for Technology, and General Dynamics Canada will ensure that scientific and engineering faculties, institutes of technology and industry join forces for the integration of QC into next-generation communication-security architectures.

Contact Us

Centre for Information Security and Cryptography
MS 476, 2500 University Drive NW
Calgary, Alberta
Canada T2N 1N4
1 (403) 220-3949
cisac@ucalgary.ca