Lotsa stuff

clifford.py

@@ -29,7 +29,7 @@ def compose_u(decomposition):
 
 def name_of(vop):
     """ Get the formatted name of a VOP """
-    return get_name[vop].title() if vop in get_name else "VOP%d" % vop
+    return "%s" % get_name[vop] if vop in get_name else "VOP%d" % vop
 
 
 @cache_to_disk("tables.pkl")

cz.py

@@ -9,12 +9,10 @@ import clifford
 
 def remove_vop(g, vops, a, avoid):
     """ Reduces VOP[a] to the identity, avoiding (if possible) the use of vertex b as a swapping partner """
-    other_neighbours = g[a] - {avoid}
-    c = avoid if len(other_neighbours) == 0 else other_neighbours.pop()
-    d = clifford.decompositions[vops[a]]
-    for v in reversed(d):
-        target = a if v == "x" else c
-        local_complementation(g, vops, target)
+    others = g[a] - {avoid}
+    swap_qubit = others.pop() if others else avoid
+    for v in reversed(clifford.decompositions[vops[a]]):
+        local_complementation(g, vops, a if v == "x" else swap_qubit)
 
 
 def local_complementation(g, vops, v):
@@ -38,4 +36,5 @@ if __name__ == '__main__':
 
     pos = viz.draw(g, vops, "out.pdf")
     remove_vop(g, vops, 0, 1)
+    remove_vop(g, vops, 1, 2)
     viz.draw(g, vops, "out2.pdf", pos)

viz.py

@@ -19,11 +19,11 @@ def draw(graph, vops, filename="out.pdf", pos=None, ns=500):
     nx.draw_networkx_nodes(g, pos, node_color="white", node_size=ns)
     nx.draw_networkx_nodes(g, pos, node_color=colors, node_size=ns, alpha=.4)
     nx.draw_networkx_edges(g, pos, edge_color="gray")
-    nx.draw_networkx_labels(g, pos)
+    nx.draw_networkx_labels(g, pos, font_family="FreeSans")
 
     labels = {i: clifford.name_of(vops[i]) for i in g.nodes()}
     pos = {k: v + np.array([0, -.1]) for k, v in pos.items()}
-    nx.draw_networkx_labels(g, pos, labels)
+    nx.draw_networkx_labels(g, pos, labels, font_family="FreeSans")
     plt.axis('off')
     plt.savefig(filename)
     return pos