def _circuit_zyz(theta, phi, lam, simplify=True, atol=DEFAULT_ATOL):
circuit = QuantumCircuit(1)
if simplify and np.isclose(theta, 0.0, atol=atol):
circuit.append(RZGate(phi + lam), [0])
return circuit
if not simplify or not np.isclose(lam, 0.0, atol=atol):
circuit.append(RZGate(lam), [0])
if not simplify or not np.isclose(theta, 0.0, atol=atol):
circuit.append(RYGate(theta), [0])
if not simplify or not np.isclose(phi, 0.0, atol=atol):
circuit.append(RZGate(phi), [0])
return circuit
def test_is_identity(self):
""" The is_identity function determines whether a pair of gates
forms the identity, when ignoring control qubits.
"""
seq = [
DAGNode({
'type': 'op',
'op': XGate().control()
}),
DAGNode({
'type': 'op',
'op': XGate().control(2)
})
]
self.assertTrue(HoareOptimizer()._is_identity(seq))
seq = [
DAGNode({
'type': 'op',
'op': RZGate(-pi / 2).control()
}),
DAGNode({
'type': 'op',
'op': RZGate(pi / 2).control(2)
})
]
self.assertTrue(HoareOptimizer()._is_identity(seq))
seq = [
DAGNode({
'type': 'op',
'op': CSwapGate()
}),
DAGNode({
'type': 'op',
'op': SwapGate()
})
]
self.assertTrue(HoareOptimizer()._is_identity(seq))
seq = [
DAGNode({
'type': 'op',
'op': UnitaryGate([[1, 0], [0, 1j]]).control()
}),
DAGNode({
'type': 'op',
'op': UnitaryGate([[1, 0], [0, -1j]])
})
]
def test_gate_multiplicity_binding(self):
"""Test binding when circuit contains multiple references to same gate"""
from qiskit.extensions.standard import RZGate
qc = QuantumCircuit(1)
theta = Parameter('theta')
gate = RZGate(theta)
qc.append(gate, [0], [])
qc.append(gate, [0], [])
qc2 = qc.bind_parameters({theta: 1.0})
self.assertEqual(len(qc2._parameter_table), 0)
for gate, _, _ in qc2.data:
self.assertEqual(float(gate.params[0]), 1.0)
class TestParameterCtrlState(QiskitTestCase):
"""Test gate equality with ctrl_state parameter."""
@data((RXGate(0.5), CRXGate(0.5)), (RYGate(0.5), CRYGate(0.5)),
(RZGate(0.5), CRZGate(0.5)), (XGate(), CXGate()),
(YGate(), CYGate()), (ZGate(), CZGate()),
(U1Gate(0.5), CU1Gate(0.5)), (SwapGate(), CSwapGate()),
(HGate(), CHGate()), (U3Gate(0.1, 0.2, 0.3), CU3Gate(0.1, 0.2, 0.3)))
@unpack
def test_ctrl_state_one(self, gate, controlled_gate):
"""Test controlled gates with ctrl_state
See https://github.com/Qiskit/qiskit-terra/pull/4025
"""
self.assertEqual(gate.control(1, ctrl_state='1'), controlled_gate)
def test_gate_multiplicity_binding(self):
"""Test binding when circuit contains multiple references to same gate"""
from qiskit.extensions.standard import RZGate
qc = QuantumCircuit(1)
theta = Parameter('theta')
gate = RZGate(theta)
qc.append(gate, [0], [])
qc.append(gate, [0], [])
# test for both `bind_parameters` and `assign_parameters`
for assign_fun in ['bind_parameters', 'assign_parameters']:
with self.subTest(assign_fun=assign_fun):
qc2 = getattr(qc, assign_fun)({theta: 1.0})
self.assertEqual(len(qc2._parameter_table), 0)
for gate, _, _ in qc2.data:
self.assertEqual(float(gate.params[0]), 1.0)
def test_controlled_rz(self):
"""Test creation of controlled rz gate"""
theta = 0.5
self.assertEqual(RZGate(theta).control(), CrzGate(theta))
def test_controlled_rz(self):
"""Test the creation of a controlled RZ gate."""
theta = 0.5
self.assertEqual(RZGate(theta).control(), CRZGate(theta))