Information Gain vs. State Disturbance i
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Christopher A. Fuchs; Christopher A. Fuchs
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Article
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1998
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John Wiley and Sons
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English
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The engine that powers quantum cryptography is the principle that there are no physical means for gathering information about the identity of a quantum system's state (when it is known to be prepared in one of a set of nonorthogonal states) without disturbing the system in a statistically detectable