CKI is a research center situated at the physics and computer science departments of University of Aarhus. Its purpose is to do application oriented and theoretical research in all aspects of quantum information processing, including as main research areas quantum cryptography and quantum computing.

CKI started January 1 1998, and is sponsored for a 3 year period by

CKI is also supported by a businessclub, consisting of companies who, in return for their support, get timely information on activities and a first right of refusal on exploitation of research results. Current members are Cryptomathic, Lucent Technologies Denmark and Terma Electronics.