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:By "answer qubit" they are refering to the target of f. That is |x>|y> becomes |x>|f(x)+y> and the "|y>" qubit is the "answer" (of f). The behaviour of f should have been explicitly stated as it has in my recent change.[[User:Skippydo|Skippydo]] 16:28, 27 June 2007 (UTC)
If i correct understand, on output measuring is the answer qubit? Or maybe becouse all firsts qubits is entangled, they gives answer if we measure one of those?..
== Deutsch algorithm with n qubits remake ==
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