def test_binding_some_params_leaves_free_params(self):
theta1, theta2, theta3 = sympy.symbols("theta1:4")
circuit = Circuit([
RX(theta1)(0),
RY(theta2)(1),
RZ(theta3)(0),
RX(theta2)(0),
])
bound_circuit = circuit.bind({theta1: 0.5, theta3: 3.14})
assert bound_circuit.free_symbols == {theta2}
def test_binding_all_params_leaves_no_free_symbols(self):
alpha, beta, gamma = sympy.symbols("alpha,beta,gamma")
circuit = Circuit([
RX(alpha)(0),
RY(beta)(1),
RZ(gamma)(0),
RX(gamma)(0),
])
bound_circuit = circuit.bind({alpha: 0.5, beta: 3.14, gamma: 0})
assert not bound_circuit.free_symbols
def test_binding_excessive_params_binds_only_the_existing_ones(self):
theta1, theta2, theta3 = sympy.symbols("theta1:4")
other_param = sympy.symbols("other_param")
circuit = Circuit([
RX(theta1)(0),
RY(theta2)(1),
RZ(theta3)(0),
RX(theta2)(0),
])
bound_circuit = circuit.bind({theta1: -np.pi, other_param: 42})
assert bound_circuit.free_symbols == {theta2, theta3}
def test_circuits_sum_yields_correct_operations(self):
circuit1 = Circuit()
circuit1 += H(0)
circuit1 += CNOT(0, 2)
circuit2 = Circuit([X(2), YY(sympy.Symbol("theta"))(5)])
res_circuit = circuit1 + circuit2
assert res_circuit.operations == [
H(0),
CNOT(0, 2),
X(2),
YY(sympy.Symbol("theta"))(5),
]
assert res_circuit.n_qubits == 6
def test_appending_to_circuit_yields_correct_operations(self):
circuit = Circuit()
circuit += H(0)
circuit += CNOT(0, 2)
assert circuit.operations == [H(0), CNOT(0, 2)]
assert circuit.n_qubits == 3
def test_circuit_bound_with_all_params_contains_bound_gates(self):
theta1, theta2, theta3 = sympy.symbols("theta1:4")
symbols_map = {theta1: 0.5, theta2: 3.14, theta3: 0}
circuit = Circuit([
RX(theta1)(0),
RY(theta2)(1),
RZ(theta3)(0),
RX(theta3)(0),
])
bound_circuit = circuit.bind(symbols_map)
expected_circuit = Circuit([
RX(theta1).bind(symbols_map)(0),
RY(theta2).bind(symbols_map)(1),
RZ(theta3).bind(symbols_map)(0),
RX(theta3).bind(symbols_map)(0),
])
assert bound_circuit == expected_circuit
def test_creating_circuit_has_correct_operations():
circuit = Circuit(operations=EXAMPLE_OPERATIONS)
assert circuit.operations == list(EXAMPLE_OPERATIONS)
gate(angle)(qubit1_i, qubit2_i)
for qubit1_i, qubit2_i in [(0, 1), (1, 0), (0, 5), (4, 2)]
for gate in [CPHASE, XX, YY, ZZ] for angle in
[0, 0.1, np.pi / 5, np.pi, 2 *
np.pi, sympy.Symbol("theta")]
],
])
def test_creating_circuit_has_correct_operations():
circuit = Circuit(operations=EXAMPLE_OPERATIONS)
assert circuit.operations == list(EXAMPLE_OPERATIONS)
@pytest.mark.parametrize("circuit", [
Circuit(),
Circuit([]),
Circuit([H(0)]),
Circuit([H(0)], 5),
])
def test_printing_circuit_doesnt_raise_exception(circuit):
str(circuit)
repr(circuit)
class TestConcatenation:
def test_appending_to_circuit_yields_correct_operations(self):
circuit = Circuit()
circuit += H(0)
circuit += CNOT(0, 2)