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\documentclass[11pt]{article}
\usepackage[utf8]{inputenc}
\usepackage{amsmath}
\usepackage{amsfonts}
\usepackage{physics}
\usepackage{yquant}
\begin{document}
\yquantdefinebox{dots}[inner sep=0pt]{$\vdots$}
\section{Spacer}
\begin{tikzpicture}
\begin{yquant}[operator/separation=5mm, register/separation=0mm]
qubit {$\ket{\psi}$} q;
qubit {$\ket{0}$} z1;
qubit {$\ket{0}$} z2;
cnot z1 | q;
cnot z2 | q;
[value=$\ket{\overline{\psi}}$]
output (q, z1, z2);
\end{yquant}
\end{tikzpicture}
\section{Spacer}
\begin{tikzpicture}
\begin{yquant}[operator/separation=5mm, register/separation=0mm]
qubit {$\ket{\psi}$} q;
qubit {$\ket{0}$} z1;
qubit {$\ket{0}$} z2;
cnot z1 | q;
cnot z2 | q;
h q;
h z1;
h z2;
[value=$\ket{\overline{\psi}}$]
output (q, z1, z2);
\end{yquant}
\end{tikzpicture}
\section{Spacer}
\begin{tikzpicture}
\begin{yquant}[operator/separation=2mm, register/separation=0mm]
qubit {} q1;
qubit {} q2;
qubit {} q3;
init {$\ket{\overline{\psi}}$} (q1, q2, q3);
qubit {$\ket{0}$} z;
cnot z | q2;
cnot z | q3;
measure z;
\end{yquant}
\end{tikzpicture}
\section{Spacer}
\begin{tikzpicture}
\begin{yquant}[operator/separation=2mm, register/separation=0mm]
qubit {} q1;
qubit {} q2;
qubit {} q3;
init {$\ket{\overline{\psi}}$} (q1, q2, q3);
qubit {$\ket{0}$} z1;
qubit {$\ket{0}$} z2;
cnot z1 | q1;
cnot z1 | q2;
cnot z2 | q2;
cnot z2 | q3;
measure z1;
measure z2;
box {$\mathrm{Correction}$} (q1, q2, q3) | z1, z2;
discard z1;
discard z2;
\end{yquant}
\end{tikzpicture}
\section{Spacer}
\begin{tikzpicture}
\begin{yquant}[operator/separation=2mm, register/separation=1mm]
qubit {} q1;
qubit {} q2;
qubit {} q3;
init {$\ket{\overline{\psi}}$} (q1, q2, q3);
qubit {$\ket{0}$} z1;
qubit {$\ket{0}$} z2;
h q1;
h q2;
h q3;
cnot z1 | q1;
cnot z1 | q2;
cnot z2 | q2;
cnot z2 | q3;
measure z1;
measure z2;
box {$\mathrm{Correction}$} (q1, q2, q3) | z1, z2;
discard z1;
discard z2;
h q1;
h q2;
h q3;
\end{yquant}
\end{tikzpicture}
\section{Spacer}
\begin{tikzpicture}
\begin{yquant}[operator/separation=4mm, register/separation=0mm]
qubit {$\ket{\psi}$} q1;
qubit {} q1z1;
qubit {} q1z2;
qubit {$\ket{0}$} q2;
qubit {} q2z1;
qubit {} q2z2;
qubit {$\ket{0}$} q3;
qubit {} q3z1;
qubit {} q3z2;
discard q1z1;
discard q1z2;
discard q2z1;
discard q2z2;
discard q3z1;
discard q3z2;
cnot q2 | q1;
cnot q3 | q1;
align q1, q1z1, q1z2, q2, q2z1, q2z2, q3, q3z1, q3z2;
h q1;
h q2;
h q3;
[value=$\ket{0}$]
init q1z1;
[value=$\ket{0}$]
init q1z2;
[value=$\ket{0}$]
init q2z1;
[value=$\ket{0}$]
init q2z2;
[value=$\ket{0}$]
init q3z1;
[value=$\ket{0}$]
init q3z2;
cnot q1z1 | q1;
cnot q1z2 | q1;
cnot q2z1 | q2;
cnot q2z2 | q2;
cnot q3z1 | q3;
cnot q3z2 | q3;
[value=]
output (q1, q1z1, q1z2, q2);
[value=$\ket{\overline{\psi}}$]
output (q2, q2z1, q2z2);
[value=]
output (q2z2, q3, q3z1, q3z2);
\end{yquant}
\end{tikzpicture}
\end{document}
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