% 
% File:	  test11.qasm
% Date:	  22-Mar-04
% Author: I. Chuang <ichuang@mit.edu>
%
% Sample qasm input file - user-defined 
% multi-qubit ops
% 
% 	defbox	fx,2,0,'U_{f(x)}'
% 	defbox	fxy,3,0,'U_{f(x,y)}'
%   
% 	qubit	q0
% 	qubit	q1
% 	qubit	q2
% 
% 	h	q0
% 	fx	q0,q1
% 	h	q1
% 	fxy	q0,q1,q2
% 

%  Time 01:
%    Gate 00 h(q0)
%  Time 02:
%    Gate 01 fx(q0,q1)
%  Time 03:
%    Gate 02 h(q1)
%  Time 04:
%    Gate 03 fxy(q0,q1,q2)

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

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

% definitions for the circuit elements

\def\gAA{\op{H}\w\A{gAA}}
\def\gBA{\gnqubit{U_{f(x)}}{d}\w\A{gBA}}
\def\gBB{\gspace{U_{f(x)}}\w\A{gBB}}
\def\gCB{\op{H}\w\A{gCB}}
\def\gDA{\gnqubit{U_{f(x,y)}}{dd}\w\A{gDA}}
\def\gDB{\gspace{U_{f(x,y)}}\w\A{gDB}}
\def\gDC{\gspace{U_{f(x,y)}}\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 &\n   &\gDA &\n  
\\  \bB & \n   &\gBB &\gCB &\gDB &\n  
\\  \bC & \n   &\n   &\n   &\gDC &\n  
%
% Vertical lines and other post-xymatrix latex
%
}

\end{document}