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Special Forums News, Links, Events and Announcements Software Releases - RSS News Not Sexy Graph State Calculator 0.1 (Default branch)
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Old 01-22-2009
Not Sexy Graph State Calculator 0.1 (Default branch)
NSGSC (Not Sexy Graph State Calculator) can calculate graph states that represent multi-qubit in quantum computing. In quantum computing, a graph state is a special type of multi-qubit state that can be represented by a graph. Each qubit is represented by a vertex of the graph, and there is an edge between every interacting pair of qubits. In particular, they are a convenient way of representing certain types of entangled states. Graph states are useful in quantum error correcting codes, entanglement measurement and purification, and for characterization of computational resources in measurement-based quantum computing models. Image

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graph::easy::layout::path

Graph::Easy::Layout::Path(3pm)				User Contributed Perl Documentation			    Graph::Easy::Layout::Path(3pm)

NAME

       Graph::Easy::Layout::Path - Path management for Manhattan-style grids

SYNOPSIS

	       use Graph::Easy;

	       my $graph = Graph::Easy->new();

	       my $bonn = Graph::Easy::Node->new(
		       name => 'Bonn',
	       );
	       my $berlin = Graph::Easy::Node->new(
		       name => 'Berlin',
	       );

	       $graph->add_edge ($bonn, $berlin);

	       $graph->layout();

	       print $graph->as_ascii( );

	       # prints:

	       # +------+     +--------+
	       # | Bonn | --> | Berlin |
	       # +------+     +--------+

DESCRIPTION

       "Graph::Easy::Layout::Scout" contains just the actual path-managing code for Graph::Easy, e.g. to create/destroy/maintain paths, node
       placement etc.

EXPORT

       Exports nothing.

SEE ALSO

       Graph::Easy.

METHODS into Graph::Easy
       This module injects the following methods into "Graph::Easy":

   _path_is_clear()
	       $graph->_path_is_clear($path);

       For all points (x,y pairs) in the path, check that the cell is still free.  $path points to a list x,y,type pairs as in "[ [x,y,type],
       [x,y,type], ...]".

   _create_cell()
	       my $cell = $graph->($edge,$x,$y,$type);

       Create a cell at "$x,$y" coordinates with type $type for the specified edge.

   _path_is_clear()
	       $graph->_path_is_clear();

       For all points (x,y pairs) in the path, check that the cell is still free.  $path points to a list of "[ x,y,type, x,y,type, ...]".

       Returns true when the path is clear, false otherwise.

   _trace_path()
	       my $path = my $graph->_trace_path($src,$dst,$edge);

       Find a free way from source node/group to destination node/group for the specified edge. Both source and destination need to be placed
       beforehand.

METHODS in Graph::Easy::Node
       This module injects the following methods into "Graph::Easy::Node":

   _near_places()
	       my $node->_near_places();

       Take a node and return a list of possible placements around it and prune out already occupied cells. $d is the distance from the node
       border and defaults to two (for placements). Set it to one for adjacent cells.

   _shuffle_dir()
	       my $dirs = $node->_shuffle_dir( [ 0,1,2,3 ], $dir);

       Take a ref to an array with four entries and shuffle them around according to $dir.

   _shift()
	       my $dir = $node->_shift($degrees);

       Return a the "flow()" direction shifted by X degrees to $dir.

AUTHOR

       Copyright (C) 2004 - 2007 by Tels <http://bloodgate.com>.

       See the LICENSE file for information.

perl v5.14.2							    2011-12-23					    Graph::Easy::Layout::Path(3pm)