% 
% File:	  test12.qasm
% Date:	  22-Mar-04
% Author: I. Chuang <ichuang@mit.edu>
%
% Sample qasm input file - multi-qubit controlled
% multi-qubit operations
% 
% 	defbox	CU2,3,1,'U'
% 	defbox	CV2,3,1,'V'
% 
% 	qubit	q0
% 	qubit	q1
% 	qubit	q2
% 	
% 	h	q0
% 	CU2	q0,q1,q2
% 	h	q0
% 	CV2	q2,q0,q1
% 	
%  Time 01:
%    Gate 00 h(q0)
%  Time 02:
%    Gate 01 CU2(q0,q1,q2)
%  Time 03:
%    Gate 02 h(q0)
%  Time 04:
%    Gate 03 CV2(q2,q0,q1)

% Qubit circuit matrix:
%
% q0: gAA, gBA, gCA, gDA, n  
% q1: n  , gBB, n  , gDB, n  
% q2: n  , gBC, n  , gDC, n  

\documentclass[11pt]{article}
\input{xyqcirc.tex}

% definitions for the circuit elements

\def\gAA{\op{H}\w\A{gAA}}
\def\gBB{\gnqubit{U}{d}\w\A{gBB}}
\def\gBC{\gspace{U}\w\A{gBC}}
\def\gBA{\b\w\A{gBA}}
\def\gCA{\op{H}\w\A{gCA}}
\def\gDA{\gnqubit{V}{d}\w\A{gDA}}
\def\gDB{\gspace{V}\w\A{gDB}}
\def\gDC{\b\w\A{gDC}}

% definitions for bit labels and initial states

\def\bA{ \q{q_{0}}}
\def\bB{ \q{q_{1}}}
\def\bC{ \q{q_{2}}}

% The quantum circuit as an xymatrix

\xymatrix@R=5pt@C=10pt{
    \bA & \gAA &\gBA &\gCA &\gDA &\n  
\\  \bB & \n   &\gBB &\n   &\gDB &\n  
\\  \bC & \n   &\gBC &\n   &\gDC &\n  
%
% Vertical lines and other post-xymatrix latex
%
\ar@{-}"gBB";"gBA"
\ar@{-}"gDB";"gDC"
}

\end{document}