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How do you build a circuit for a modified Toffoli gate using only local unitary operations and CNOT operations? The two-qubit unitary operation is given by: $\text{diag}\{1, 1, 1, e^{i\phi}\}$.

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  • $\begingroup$ You included the programming tag: are looking for some type of code implementation, or simply a mathematical derivation? $\endgroup$ – rjh324 May 12 at 21:41
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    $\begingroup$ What do you mean by "modified toffoli"? $\endgroup$ – DaftWullie May 13 at 6:30

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