File:Quantum phase estimation.svg

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Summary

DescriptionQuantum phase estimation.svg	English: Quantum phase estimation circuit where $F_{n}$ is the en:quantum Fourier transform on n qubits.
Source	Created in LaTeX using Q-circuit. Source code below.
Author	Self

\documentclass[11pt]{article}
\input{Qcircuit}
\thispagestyle{empty}
\begin{document}
\begin{align*}
 \Qcircuit @C=.7em @R=.7em {
  \lstick{\ket{0}}    & \gate{H} & \qw & \ctrl{4} & \qw        & \qw & \cdots & & \qw                & \multigate{3}{F_n^{-1}} & \qw    & \meter & \cw \\
  \lstick{\ket{0}}    & \gate{H} & \qw & \qw      & \ctrl{3}   & \qw & \cdots & & \qw                & \ghost{F_n^{-1}}	& \qw  & \meter & \cw \\
  \lstick{\vdots\ \ } & \vdots   &     &          &            &     &        & &                    & \pureghost{F_n^{-1}}    &        & \vdots &     \\
  \lstick{\ket{0}}    & \gate{H} & \qw & \qw      & \qw        & \qw & \cdots & & \ctrl{1}           & \ghost{F_n^{-1}}	& \qw  & \meter & \cw \\
  \lstick{\ket{\psi}} & /^m \qw  & \qw & \gate{U} & \gate{U^2} & \qw & \cdots & & \gate{U^{2^{n-1}}} & \qw
 }
\end{align*}
\end{document}

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File history

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	21:47, 28 March 2011		315 × 137 (63 KB)	Bender2k14	Using the undocumented pureghost command of Q-circuit, removed an unnecessary wire.
	05:18, 11 March 2011		317 × 138 (63 KB)	Bender2k14	{{Information \|Description ={{en\|1=Quantum phase estimation circuit where <math>F_n</math> is the en:quantum Fourier transform on ''n'' qubits.}} \|Source =Created in LaTeX using [http://www.cquic.org/Qcircuit/ Q-circuit]. Source code below