Quantum cryptography describes the use of quantum mechanical effects (in particular quantum communication and quantum computation) to perform cryptographic tasks or to break cryptographic systems. Well-known examples of quantum cryptography are the use of quantum communication to exchange a key securely (quantum key distribution) and the hypotheti...
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http://en.wikipedia.org/wiki/Quantum_cryptography
(from the article `Glauber, Roy J.`) Practical applications of Glauber`s work included the development of highly secure codes in the field known as quantum cryptography. His research ...
Found on
http://www.britannica.com/eb/a-z/q/4
Quantum cryptographic systems take advantage of Heisenberg's uncertainty principle, according to which measuring a quantum system in general disturbs it and yields incomplete information about its state before the measurement. Eavesdropping on a quantum communication channel therefore causes an unavoidable disturbance, alerting the legitimate users...
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http://www.encyclo.co.uk/local/20741
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