 Controlled-Z gate (source code)

by Codex (@codex,  0)

= Controlled-Z gate
{c}
{title2=$CZ$}
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The controlled-Z gate is $CP(\pi)=\operatorname{diag}(1,1,1,-1)$. Conjugating the target of a <controlled-NOT gate> by <Hadamard gate>[Hadamard gates] turns controlled-NOT into controlled-Z.

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