fix: Reintroduce extended support for symmetric two-qubit gates

qiboteam · Aug 13, 2024 · 70d1671 · 70d1671
1 parent 98896b0
commit 70d1671
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Showing 2 changed files with 14 additions and 4 deletions.
diff --git a/src/qibolab/platform/platform.py b/src/qibolab/platform/platform.py
@@ -150,9 +150,15 @@ def pairs(self) -> QubitPairMap:
                 self._pairs[p] = QubitPair(
                     qubit1=p[0], qubit2=p[1], native_gates=natives
                 )
+                if natives.symmetric:
+                    self._pairs[(p[1], p[0])] = QubitPair(
+                        qubit1=p[0], qubit2=p[1], native_gates=natives
+                    )
 
         for p, natives in self.parameters.native_gates.two_qubit.items():
             self._pairs[p].native_gates = natives
+            if natives.symmetric:
+                self._pairs[(p[1], p[0])].native_gates = natives
 
         return self._pairs
 

diff --git a/tests/test_backends.py b/tests/test_backends.py
@@ -121,10 +121,14 @@ def dummy_string_qubit_names():
         pair.qubit2 = name[1]
         platform._pairs[name] = pair
         del platform._pairs[(q0, q1)]
-        platform.parameters.native_gates.two_qubit[name] = (
-            platform.parameters.native_gates.two_qubit[(q0, q1)]
-        )
-        del platform.parameters.native_gates.two_qubit[(q0, q1)]
+        try:
+            platform.parameters.native_gates.two_qubit[name] = (
+                platform.parameters.native_gates.two_qubit[(q0, q1)]
+            )
+            del platform.parameters.native_gates.two_qubit[(q0, q1)]
+        except KeyError:
+            # the symmetrized pair is only present in pairs, not in the natives
+            pass
 
     return platform