use XXMINUSYY gate

Author: kevinsung

src/qiskit_quimb/gate.py

@@ -181,6 +181,12 @@ def _(op: Instruction, qubits: Sequence[int], kwargs: dict[str, Any]):
     return quimb.tensor.Gate("X", params=[], qubits=qubits, **kwargs)
 
 
+@_register_gate_func("xx_minus_yy")
+def _(op: Instruction, qubits: Sequence[int], kwargs: dict[str, Any]):
+    theta, beta = op.params
+    return quimb.tensor.Gate("XXMINUSYY", params=[theta, beta], qubits=qubits, **kwargs)
+
+
 @_register_gate_func("xx_plus_yy")
 def _(op: Instruction, qubits: Sequence[int], kwargs: dict[str, Any]):
     theta, beta = op.params

tests/circuit_test.py

@@ -38,6 +38,7 @@
     U2Gate,
     U3Gate,
     XGate,
+    XXMinusYYGate,
     XXPlusYYGate,
     YGate,
     ZGate,
@@ -60,6 +61,9 @@ def test_quimb_circuit():
     circuit.append(XXPlusYYGate(rng.uniform(-10, 10), rng.uniform(-10, 10)), [b, c])
     circuit.append(XXPlusYYGate(rng.uniform(-10, 10), rng.uniform(-10, 10)), [a, b])
     circuit.append(XXPlusYYGate(rng.uniform(-10, 10), rng.uniform(-10, 10)), [c, d])
+    circuit.append(XXMinusYYGate(rng.uniform(-10, 10), rng.uniform(-10, 10)), [b, c])
+    circuit.append(XXMinusYYGate(rng.uniform(-10, 10), rng.uniform(-10, 10)), [a, b])
+    circuit.append(XXMinusYYGate(rng.uniform(-10, 10), rng.uniform(-10, 10)), [c, d])
     circuit.append(CPhaseGate(rng.uniform(-10, 10)), [b, c])
     circuit.append(CPhaseGate(rng.uniform(-10, 10)), [a, b])
     circuit.append(CPhaseGate(rng.uniform(-10, 10)), [c, d])