SWAP gate for (non-) reversed circuit (#177)

SWAP needs to be treated differently for circuits with reversed and non-reversed states order.
qutip · Nov 9, 2022 · 17d37af · 17d37af
1 parent 99b0505
commit 17d37af
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/src/qutip_qip/circuit/circuit.py b/src/qutip_qip/circuit/circuit.py
@@ -967,7 +967,9 @@ def latex_code(self):
                                 distance = abs(
                                     gate.targets[1] - gate.targets[0]
                                 )
-                                col.append(r" \qswap \qwx[-%d] \qw" % distance)
+                                if self.reverse_states:
+                                    distance = -distance
+                                col.append(r" \qswap \qwx[%d] \qw" % distance)
                                 _swap_processing = True
 
                             elif (