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appunti-steffo/7 - Introduction to quantum information processing/3 - Gates complessi/Swap gate.md

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[[gate quantistico complesso]] che scambia gli [[qbit|stati di due qbit]].
$$
\Huge
\mathbf{S}_{0 \leftrightarrow 1}
=
\begin{bmatrix}
1 & 0 & 0 & 0 \\
0 & 0 & 1 & 0 \\
0 & 1 & 0 & 0 \\
0 & 0 & 0 & 1
\end{bmatrix}
$$