def test_multi_controlled_y_rotation_matrix_basic_mode(
self, num_controls, use_basis_gates):
"""Test the multi controlled Y rotation using the mode 'basic'.
Based on the test moved here from Aqua:
https://github.com/Qiskit/qiskit-aqua/blob/769ca8f/test/aqua/test_mcr.py
"""
# get the number of required ancilla qubits
if num_controls <= 2:
num_ancillas = 0
else:
num_ancillas = num_controls - 2
q_controls = QuantumRegister(num_controls)
q_target = QuantumRegister(1)
for ctrl_state in range(2**num_controls):
bitstr = bin(ctrl_state)[2:].zfill(num_controls)[::-1]
theta = 0.871236 * pi
if num_ancillas > 0:
q_ancillas = QuantumRegister(num_ancillas)
qc = QuantumCircuit(q_controls, q_target, q_ancillas)
else:
qc = QuantumCircuit(q_controls, q_target)
q_ancillas = None
for idx, bit in enumerate(bitstr):
if bit == '0':
qc.x(q_controls[idx])
qc.mcry(theta,
q_controls,
q_target[0],
q_ancillas,
mode='basic',
use_basis_gates=use_basis_gates)
for idx, bit in enumerate(bitstr):
if bit == '0':
qc.x(q_controls[idx])
rot_mat = RYGate(theta).to_matrix()
backend = BasicAer.get_backend('unitary_simulator')
simulated = execute(qc, backend).result().get_unitary(qc)
if num_ancillas > 0:
simulated = simulated[:2**(num_controls +
1), :2**(num_controls + 1)]
expected = _compute_control_matrix(rot_mat,
num_controls,
ctrl_state=ctrl_state)
with self.subTest(msg='control state = {}'.format(ctrl_state)):
self.assertTrue(matrix_equal(simulated, expected))
def test_multi_controlled_rotation_gate_matrices(self, num_controls,
base_gate_name,
use_basis_gates):
"""Test the multi controlled rotation gates without ancillas.
Based on the test moved here from Aqua:
https://github.com/Qiskit/qiskit-aqua/blob/769ca8f/test/aqua/test_mcr.py
"""
q_controls = QuantumRegister(num_controls)
q_target = QuantumRegister(1)
# iterate over all possible combinations of control qubits
for ctrl_state in range(2**num_controls):
bitstr = bin(ctrl_state)[2:].zfill(num_controls)[::-1]
theta = 0.871236 * pi
qc = QuantumCircuit(q_controls, q_target)
for idx, bit in enumerate(bitstr):
if bit == '0':
qc.x(q_controls[idx])
# call mcrx/mcry/mcrz
if base_gate_name == 'y':
qc.mcry(theta,
q_controls,
q_target[0],
None,
mode='noancilla',
use_basis_gates=use_basis_gates)
else: # case 'x' or 'z' only support the noancilla mode and do not have this keyword
getattr(qc, 'mcr' + base_gate_name)(
theta,
q_controls,
q_target[0],
use_basis_gates=use_basis_gates)
for idx, bit in enumerate(bitstr):
if bit == '0':
qc.x(q_controls[idx])
backend = BasicAer.get_backend('unitary_simulator')
simulated = execute(qc, backend).result().get_unitary(qc)
if base_gate_name == 'x':
rot_mat = RXGate(theta).to_matrix()
elif base_gate_name == 'y':
rot_mat = RYGate(theta).to_matrix()
else: # case 'z'
rot_mat = U1Gate(theta).to_matrix()
expected = _compute_control_matrix(rot_mat,
num_controls,
ctrl_state=ctrl_state)
with self.subTest(msg='control state = {}'.format(ctrl_state)):
self.assertTrue(matrix_equal(simulated, expected))
def _circuit_xyx(theta, phi, lam, simplify=True, atol=DEFAULT_ATOL):
circuit = QuantumCircuit(1)
if simplify and np.isclose(theta, 0.0, atol=atol):
circuit.append(RXGate(phi + lam), [0])
return circuit
if not simplify or not np.isclose(lam, 0.0, atol=atol):
circuit.append(RXGate(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(RXGate(phi), [0])
return circuit
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_controlled_ry(self):
"""Test creation of controlled ry gate"""
theta = 0.5
self.assertEqual(RYGate(theta).control(), CryGate(theta))
def test_controlled_ry(self):
"""Test the creation of a controlled RY gate."""
theta = 0.5
self.assertEqual(RYGate(theta).control(), CRYGate(theta))