\documentclass[11pt]{article}
\input{Qcircuit}
\thispagestyle{empty}
\begin{document}
\begin{align*}
 \Qcircuit @C=1em @R=.7em {
  \lstick{\ket{\psi}_C}   & \ctrl{1} & \gate{H} & \meter                  & \control \cw \\
  \lstick{\ket{\Phi}^+_A} & \targ    & \meter   & \control \cw \cwx[1] \\
  \lstick{\ket{\Phi}^+_B} & \qw	     & \qw      & \targ                   & \control \cwx[-2] \qw & \rstick{\ket{\psi}_B} \qw
 }
\end{align*}
\end{document}