Add Ryy to Rxx equivalence

Qiskit · Jun 20, 2023 · 6431dd7 · 6431dd7
1 parent 09d340f
commit 6431dd7
Showing 1 changed file with 14 additions and 0 deletions.
diff --git a/qiskit/circuit/library/standard_gates/equivalence_library.py b/qiskit/circuit/library/standard_gates/equivalence_library.py
@@ -458,6 +458,20 @@
     ryy_to_rzz.append(inst, qargs, cargs)
 _sel.add_equivalence(RYYGate(theta), ryy_to_rzz)
 
+# RYY to RXX
+q = QuantumRegister(2, "q")
+theta = Parameter("theta")
+ryy_to_rxx = QuantumCircuit(q)
+for inst, qargs, cargs in [
+    (SdgGate(), [q[0]], []),
+    (SdgGate(), [q[1]], []),
+    (RXXGate(theta), [q[0], q[1]], []),
+    (SGate(), [q[0]], []),
+    (SGate(), [q[1]], []),
+]:
+    ryy_to_rxx.append(inst, qargs, cargs)
+_sel.add_equivalence(RYYGate(theta), ryy_to_rxx)
+
 # RZGate
 #                  global phase: -ϴ/2
 #    ┌───────┐        ┌───────┐