class TestProgramConverter:
"""Test that PyQuil Program instances are properly converted."""
@pytest.mark.parametrize(
"pyquil_operation,expected_pl_operation",
[
(g.I(0), qml.Identity(wires=[0])),
(g.H(0), qml.Hadamard(0)),
(g.H(0).dagger(), qml.Hadamard(0).inv()),
(g.H(0).dagger().dagger(), qml.Hadamard(0).inv().inv()),
(g.S(0), qml.S(wires=[0])),
(g.S(0).dagger(), qml.S(wires=[0]).inv()),
(g.S(0).dagger().dagger(), qml.S(wires=[0]).inv().inv()),
(g.T(0), qml.T(wires=[0])),
(g.T(0).dagger(), qml.T(wires=[0]).inv()),
(g.T(0).dagger().dagger(), qml.T(wires=[0]).inv().inv()),
(g.X(0), qml.PauliX(0)),
(g.X(0).dagger(), qml.PauliX(0).inv()),
(g.X(0).dagger().dagger(), qml.PauliX(0).inv().inv()),
(g.X(0).controlled(1), qml.CNOT(wires=[1, 0])),
(g.X(0).controlled(1).dagger(), qml.CNOT(wires=[1, 0]).inv()),
(g.X(0).controlled(1).dagger().dagger(),
qml.CNOT(wires=[1, 0]).inv().inv()),
(g.X(0).controlled(1).controlled(2),
plf.ops.CCNOT(wires=[2, 1, 0])),
(g.X(0).controlled(1).controlled(2).dagger(),
plf.ops.CCNOT(wires=[2, 1, 0]).inv()),
(
g.X(0).controlled(1).controlled(2).dagger().dagger(),
plf.ops.CCNOT(wires=[2, 1, 0]).inv().inv(),
),
(g.Y(0), qml.PauliY(0)),
(g.Y(0).dagger(), qml.PauliY(0).inv()),
(g.Y(0).dagger().dagger(), qml.PauliY(0).inv().inv()),
(g.Z(0), qml.PauliZ(0)),
(g.Z(0).dagger(), qml.PauliZ(0).inv()),
(g.Z(0).dagger().dagger(), qml.PauliZ(0).inv().inv()),
(g.Z(0).controlled(1), qml.CZ(wires=[1, 0])),
(g.Z(0).controlled(1).dagger(), qml.CZ(wires=[1, 0]).inv()),
(g.Z(0).controlled(1).dagger().dagger(),
qml.CZ(wires=[1, 0]).inv().inv()),
(g.CNOT(0, 1), qml.CNOT(wires=[0, 1])),
(g.CNOT(0, 1).dagger(), qml.CNOT(wires=[0, 1]).inv()),
(g.CNOT(0,
1).dagger().dagger(), qml.CNOT(wires=[0, 1]).inv().inv()),
(g.CNOT(0, 1).controlled(2), plf.ops.CCNOT(wires=[2, 0, 1])),
(g.CNOT(0, 1).controlled(2).dagger(),
plf.ops.CCNOT(wires=[2, 0, 1]).inv()),
(
g.CNOT(0, 1).controlled(2).dagger().dagger(),
plf.ops.CCNOT(wires=[2, 0, 1]).inv().inv(),
),
(g.SWAP(0, 1), qml.SWAP(wires=[0, 1])),
(g.SWAP(0, 1).dagger(), qml.SWAP(wires=[0, 1]).inv()),
(g.SWAP(0,
1).dagger().dagger(), qml.SWAP(wires=[0, 1]).inv().inv()),
(g.SWAP(0, 1).controlled(2), qml.CSWAP(wires=[2, 0, 1])),
(g.SWAP(0, 1).controlled(2).dagger(),
qml.CSWAP(wires=[2, 0, 1]).inv()),
(g.SWAP(0, 1).controlled(2).dagger().dagger(),
qml.CSWAP(wires=[2, 0, 1]).inv().inv()),
(g.ISWAP(0, 1), plf.ops.ISWAP(wires=[0, 1])),
(g.ISWAP(0, 1).dagger(), plf.ops.ISWAP(wires=[0, 1]).inv()),
(g.ISWAP(0, 1).dagger().dagger(),
plf.ops.ISWAP(wires=[0, 1]).inv().inv()),
(g.PSWAP(0.3, 0, 1), plf.ops.PSWAP(0.3, wires=[0, 1])),
(g.PSWAP(0.3, 0, 1).dagger(), plf.ops.PSWAP(0.3, wires=[0, 1
]).inv()),
(g.PSWAP(0.3, 0, 1).dagger().dagger(),
plf.ops.PSWAP(0.3, wires=[0, 1]).inv().inv()),
(g.CZ(0, 1), qml.CZ(wires=[0, 1])),
(g.CZ(0, 1).dagger(), qml.CZ(wires=[0, 1]).inv()),
(g.CZ(0, 1).dagger().dagger(), qml.CZ(wires=[0, 1]).inv().inv()),
(g.PHASE(0.3, 0), qml.PhaseShift(0.3, wires=[0])),
(g.PHASE(0.3, 0).dagger(), qml.PhaseShift(0.3, wires=[0]).inv()),
(g.PHASE(0.3, 0).dagger().dagger(), qml.PhaseShift(
0.3, wires=[0]).inv().inv()),
(g.PHASE(0.3, 0).controlled(1), plf.ops.CPHASE(
0.3, 3, wires=[1, 0])),
(g.PHASE(0.3, 0).controlled(1).dagger(),
plf.ops.CPHASE(0.3, 3, wires=[1, 0]).inv()),
(
g.PHASE(0.3, 0).controlled(1).dagger().dagger(),
plf.ops.CPHASE(0.3, 3, wires=[1, 0]).inv().inv(),
),
(g.RX(0.3, 0), qml.RX(0.3, wires=[0])),
(g.RX(0.3, 0).dagger(), qml.RX(0.3, wires=[0]).inv()),
(g.RX(0.3, 0).dagger().dagger(), qml.RX(0.3,
wires=[0]).inv().inv()),
(g.RX(0.3, 0).controlled(1), qml.CRX(0.3, wires=[1, 0])),
(g.RX(0.3, 0).controlled(1).dagger(), qml.CRX(0.3,
wires=[1, 0]).inv()),
(g.RX(0.3, 0).controlled(1).dagger().dagger(),
qml.CRX(0.3, wires=[1, 0]).inv().inv()),
(g.RY(0.3, 0), qml.RY(0.3, wires=[0])),
(g.RY(0.3, 0).dagger(), qml.RY(0.3, wires=[0]).inv()),
(g.RY(0.3, 0).dagger().dagger(), qml.RY(0.3,
wires=[0]).inv().inv()),
(g.RY(0.3, 0).controlled(1), qml.CRY(0.3, wires=[1, 0])),
(g.RY(0.3, 0).controlled(1).dagger(), qml.CRY(0.3,
wires=[1, 0]).inv()),
(g.RY(0.3, 0).controlled(1).dagger().dagger(),
qml.CRY(0.3, wires=[1, 0]).inv().inv()),
(g.RZ(0.3, 0), qml.RZ(0.3, wires=[0])),
(g.RZ(0.3, 0).dagger(), qml.RZ(0.3, wires=[0]).inv()),
(g.RZ(0.3, 0).dagger().dagger(), qml.RZ(0.3,
wires=[0]).inv().inv()),
(g.RZ(0.3, 0).controlled(1), qml.CRZ(0.3, wires=[1, 0])),
(g.RZ(0.3, 0).controlled(1).dagger(), qml.CRZ(0.3,
wires=[1, 0]).inv()),
(g.RZ(0.3, 0).controlled(1).dagger().dagger(),
qml.CRZ(0.3, wires=[1, 0]).inv().inv()),
(g.CPHASE(0.3, 0, 1), plf.ops.CPHASE(0.3, 3, wires=[0, 1])),
(g.CPHASE(0.3, 0, 1).dagger(), plf.ops.CPHASE(0.3, 3,
wires=[0, 1]).inv()),
(
g.CPHASE(0.3, 0, 1).dagger().dagger(),
plf.ops.CPHASE(0.3, 3, wires=[0, 1]).inv().inv(),
),
(g.CPHASE00(0.3, 0, 1), plf.ops.CPHASE(0.3, 0, wires=[0, 1])),
(g.CPHASE00(0.3, 0, 1).dagger(),
plf.ops.CPHASE(0.3, 0, wires=[0, 1]).inv()),
(
g.CPHASE00(0.3, 0, 1).dagger().dagger(),
plf.ops.CPHASE(0.3, 0, wires=[0, 1]).inv().inv(),
),
(g.CPHASE01(0.3, 0, 1), plf.ops.CPHASE(0.3, 1, wires=[0, 1])),
(g.CPHASE01(0.3, 0, 1).dagger(),
plf.ops.CPHASE(0.3, 1, wires=[0, 1]).inv()),
(
g.CPHASE01(0.3, 0, 1).dagger().dagger(),
plf.ops.CPHASE(0.3, 1, wires=[0, 1]).inv().inv(),
),
(g.CPHASE10(0.3, 0, 1), plf.ops.CPHASE(0.3, 2, wires=[0, 1])),
(g.CPHASE10(0.3, 0, 1).dagger(),
plf.ops.CPHASE(0.3, 2, wires=[0, 1]).inv()),
(
g.CPHASE10(0.3, 0, 1).dagger().dagger(),
plf.ops.CPHASE(0.3, 2, wires=[0, 1]).inv().inv(),
),
(g.CSWAP(0, 1, 2), qml.CSWAP(wires=[0, 1, 2])),
(g.CSWAP(0, 1, 2).dagger(), qml.CSWAP(wires=[0, 1, 2]).inv()),
(g.CSWAP(0, 1, 2).dagger().dagger(),
qml.CSWAP(wires=[0, 1, 2]).inv().inv()),
(g.CCNOT(0, 1, 2), plf.ops.CCNOT(wires=[0, 1, 2])),
(g.CCNOT(0, 1, 2).dagger(), plf.ops.CCNOT(wires=[0, 1, 2]).inv()),
(g.CCNOT(0, 1, 2).dagger().dagger(),
plf.ops.CCNOT(wires=[0, 1, 2]).inv().inv()),
],
)
def test_convert_operation(self, pyquil_operation, expected_pl_operation):
"""Test that single pyquil gates are properly converted."""
program = pyquil.Program()
program += pyquil_operation
with OperationRecorder() as rec:
loader = load_program(program)
loader(wires=range(len(loader.defined_qubits)))
assert rec.queue[0].name == expected_pl_operation.name
assert rec.queue[0].wires == expected_pl_operation.wires
assert rec.queue[0].params == expected_pl_operation.params
def test_convert_simple_program(self):
"""Test that a simple program is properly converted."""
program = pyquil.Program()
program += g.H(0)
program += g.RZ(0.34, 1)
program += g.CNOT(0, 3)
program += g.H(2)
program += g.H(7)
program += g.X(7)
program += g.Y(1)
program += g.RZ(0.34, 1)
with OperationRecorder() as rec:
load_program(program)(wires=range(5))
# The wires should be assigned as
# 0 1 2 3 7
# 0 1 2 3 4
expected_queue = [
qml.Hadamard(0),
qml.RZ(0.34, wires=[1]),
qml.CNOT(wires=[0, 3]),
qml.Hadamard(2),
qml.Hadamard(4),
qml.PauliX(4),
qml.PauliY(1),
qml.RZ(0.34, wires=[1]),
]
for converted, expected in zip(rec.queue, expected_queue):
assert converted.name == expected.name
assert converted.wires == expected.wires
assert converted.params == expected.params
def test_convert_simple_program_with_parameters(self):
"""Test that a simple program with parameters is properly converted."""
program = pyquil.Program()
alpha = program.declare("alpha", "REAL")
beta = program.declare("beta", "REAL")
gamma = program.declare("gamma", "REAL")
program += g.H(0)
program += g.CNOT(0, 1)
program += g.RX(alpha, 1)
program += g.RZ(beta, 1)
program += g.RX(gamma, 1)
program += g.CNOT(0, 1)
program += g.H(0)
a, b, c = 0.1, 0.2, 0.3
parameter_map = {"alpha": a, "beta": b, "gamma": c}
with OperationRecorder() as rec:
load_program(program)(wires=range(2), parameter_map=parameter_map)
expected_queue = [
qml.Hadamard(0),
qml.CNOT(wires=[0, 1]),
qml.RX(0.1, wires=[1]),
qml.RZ(0.2, wires=[1]),
qml.RX(0.3, wires=[1]),
qml.CNOT(wires=[0, 1]),
qml.Hadamard(0),
]
for converted, expected in zip(rec.queue, expected_queue):
assert converted.name == expected.name
assert converted.wires == expected.wires
assert converted.params == expected.params
def test_parameter_not_given_error(self):
"""Test that the correct error is raised if a parameter is not given."""
program = pyquil.Program()
alpha = program.declare("alpha", "REAL")
beta = program.declare("beta", "REAL")
program += g.H(0)
program += g.CNOT(0, 1)
program += g.RX(alpha, 1)
program += g.RZ(beta, 1)
a = 0.1
parameter_map = {"alpha": a}
with pytest.raises(
qml.DeviceError,
match=
"The PyQuil program defines a variable .* that is not present in the given variable map",
):
load_program(program)(wires=range(2), parameter_map=parameter_map)
def test_convert_simple_program_with_parameters_mixed_keys(self):
"""Test that a parametrized program is properly converted when
the variable map contains mixed key types."""
program = pyquil.Program()
alpha = program.declare("alpha", "REAL")
beta = program.declare("beta", "REAL")
gamma = program.declare("gamma", "REAL")
delta = program.declare("delta", "REAL")
program += g.H(0)
program += g.CNOT(0, 1)
program += g.RX(alpha, 1)
program += g.RZ(beta, 1)
program += g.RX(gamma, 1)
program += g.CNOT(0, 1)
program += g.RZ(delta, 0)
program += g.H(0)
a, b, c, d = 0.1, 0.2, 0.3, 0.4
parameter_map = {"alpha": a, beta: b, gamma: c, "delta": d}
with OperationRecorder() as rec:
load_program(program)(wires=range(2), parameter_map=parameter_map)
expected_queue = [
qml.Hadamard(0),
qml.CNOT(wires=[0, 1]),
qml.RX(0.1, wires=[1]),
qml.RZ(0.2, wires=[1]),
qml.RX(0.3, wires=[1]),
qml.CNOT(wires=[0, 1]),
qml.RZ(0.4, wires=[0]),
qml.Hadamard(0),
]
for converted, expected in zip(rec.queue, expected_queue):
assert converted.name == expected.name
assert converted.wires == expected.wires
assert converted.params == expected.params
def test_convert_simple_program_wire_assignment(self):
"""Test that the assignment of qubits to wires works as expected."""
program = pyquil.Program()
program += g.H(0)
program += g.RZ(0.34, 1)
program += g.CNOT(0, 3)
program += g.H(2)
program += g.H(7)
program += g.X(7)
program += g.Y(1)
program += g.RZ(0.34, 1)
with OperationRecorder() as rec:
load_program(program)(wires=[3, 6, 4, 9, 1])
# The wires should be assigned as
# 0 1 2 3 7
# 3 6 4 9 1
expected_queue = [
qml.Hadamard(3),
qml.RZ(0.34, wires=[6]),
qml.CNOT(wires=[3, 9]),
qml.Hadamard(4),
qml.Hadamard(1),
qml.PauliX(1),
qml.PauliY(6),
qml.RZ(0.34, wires=[6]),
]
for converted, expected in zip(rec.queue, expected_queue):
assert converted.name == expected.name
assert converted.wires == expected.wires
assert converted.params == expected.params
@pytest.mark.parametrize("wires", [[0, 1, 2, 3], [4, 5]])
def test_convert_wire_error(self, wires):
"""Test that the conversion raises an error if the given number
of wires doesn't match the number of qubits in the Program."""
program = pyquil.Program()
program += g.H(0)
program += g.H(1)
program += g.H(2)
with pytest.raises(
qml.DeviceError,
match=
"The number of given wires does not match the number of qubits in the PyQuil Program",
):
load_program(program)(wires=wires)
def test_convert_program_with_inverses(self):
"""Test that a program with inverses is properly converted."""
program = pyquil.Program()
program += g.H(0)
program += g.RZ(0.34, 1).dagger()
program += g.CNOT(0, 3).dagger()
program += g.H(2)
program += g.H(7).dagger().dagger()
program += g.X(7).dagger()
program += g.X(7)
program += g.Y(1)
program += g.RZ(0.34, 1)
with OperationRecorder() as rec:
load_program(program)(wires=range(5))
expected_queue = [
qml.Hadamard(0),
qml.RZ(0.34, wires=[1]).inv(),
qml.CNOT(wires=[0, 3]).inv(),
qml.Hadamard(2),
qml.Hadamard(4),
qml.PauliX(4).inv(),
qml.PauliX(4),
qml.PauliY(1),
qml.RZ(0.34, wires=[1]),
]
for converted, expected in zip(rec.queue, expected_queue):
assert converted.name == expected.name
assert converted.wires == expected.wires
assert converted.params == expected.params
def test_convert_program_with_controlled_operations(self):
"""Test that a program with controlled operations is properly converted."""
program = pyquil.Program()
program += g.RZ(0.34, 1)
program += g.RY(0.2, 3).controlled(2)
program += g.RX(0.4, 2).controlled(0)
program += g.CNOT(1, 4)
program += g.CNOT(1, 6).controlled(3)
program += g.X(3).controlled(4).controlled(1)
with OperationRecorder() as rec:
load_program(program)(wires=range(6))
expected_queue = [
qml.RZ(0.34, wires=[1]),
qml.CRY(0.2, wires=[2, 3]),
qml.CRX(0.4, wires=[0, 2]),
qml.CNOT(wires=[1, 4]),
plf.ops.CCNOT(wires=[3, 1, 5]),
plf.ops.CCNOT(wires=[1, 4, 3]),
]
for converted, expected in zip(rec.queue, expected_queue):
assert converted.name == expected.name
assert converted.wires == expected.wires
assert converted.params == expected.params
def test_convert_program_with_controlled_operations_not_in_pl_core(
self, tol):
"""Test that a program with controlled operations out of scope of PL core/PLF
is properly converted, i.e. the operations are replaced with controlled operations."""
program = pyquil.Program()
CS_matrix = np.eye(4, dtype=complex)
CS_matrix[3, 3] = 1j
CCT_matrix = np.eye(8, dtype=complex)
CCT_matrix[7, 7] = np.exp(1j * np.pi / 4)
program += g.CNOT(0, 1)
program += g.S(0).controlled(1)
program += g.S(1).controlled(0)
program += g.T(0).controlled(1).controlled(2)
program += g.T(1).controlled(0).controlled(2)
program += g.T(2).controlled(1).controlled(0)
with OperationRecorder() as rec:
load_program(program)(wires=range(3))
expected_queue = [
qml.CNOT(wires=[0, 1]),
qml.QubitUnitary(CS_matrix, wires=[1, 0]),
qml.QubitUnitary(CS_matrix, wires=[0, 1]),
qml.QubitUnitary(CCT_matrix, wires=[2, 1, 0]),
qml.QubitUnitary(CCT_matrix, wires=[2, 0, 1]),
qml.QubitUnitary(CCT_matrix, wires=[0, 1, 2]),
]
for converted, expected in zip(rec.queue, expected_queue):
assert converted.name == expected.name
assert converted.wires == expected.wires
assert np.allclose(converted.params,
expected.params,
atol=tol,
rtol=0)
def test_convert_program_with_controlled_dagger_operations(self):
"""Test that a program that combines controlled and daggered operations
is properly converted."""
program = pyquil.Program()
program += g.CNOT(0, 1).controlled(2)
program += g.CNOT(0, 1).dagger().controlled(2)
program += g.CNOT(0, 1).controlled(2).dagger()
program += g.CNOT(0, 1).dagger().controlled(2).dagger()
program += g.RX(0.3, 3).controlled(4)
program += g.RX(0.2, 3).controlled(4).dagger()
program += g.RX(0.3, 3).dagger().controlled(4)
program += g.RX(0.2, 3).dagger().controlled(4).dagger()
program += g.X(2).dagger().controlled(4).controlled(1).dagger()
program += g.X(0).dagger().controlled(4).controlled(1)
program += g.X(0).dagger().controlled(4).dagger().dagger().controlled(
1).dagger()
with OperationRecorder() as rec:
load_program(program)(wires=range(5))
expected_queue = [
plf.ops.CCNOT(wires=[2, 0, 1]),
plf.ops.CCNOT(wires=[2, 0, 1]).inv(),
plf.ops.CCNOT(wires=[2, 0, 1]).inv(),
plf.ops.CCNOT(wires=[2, 0, 1]),
qml.CRX(0.3, wires=[4, 3]),
qml.CRX(0.2, wires=[4, 3]).inv(),
qml.CRX(0.3, wires=[4, 3]).inv(),
qml.CRX(0.2, wires=[4, 3]),
plf.ops.CCNOT(wires=[1, 4, 2]),
plf.ops.CCNOT(wires=[1, 4, 0]).inv(),
plf.ops.CCNOT(wires=[1, 4, 0]),
]
for converted, expected in zip(rec.queue, expected_queue):
assert converted.name == expected.name
assert converted.wires == expected.wires
assert converted.params == expected.params
def test_convert_program_with_defgates(self):
"""Test that a program that defines its own gates is properly converted."""
program = pyquil.Program()
sqrt_x = np.array([[0.5 + 0.5j, 0.5 - 0.5j], [0.5 - 0.5j, 0.5 + 0.5j]])
sqrt_x_t2 = np.kron(sqrt_x, sqrt_x)
sqrt_x_t3 = np.kron(sqrt_x, sqrt_x_t2)
sqrt_x_definition = pyquil.quil.DefGate("SQRT-X", sqrt_x)
SQRT_X = sqrt_x_definition.get_constructor()
sqrt_x_t2_definition = pyquil.quil.DefGate("SQRT-X-T2", sqrt_x_t2)
SQRT_X_T2 = sqrt_x_t2_definition.get_constructor()
sqrt_x_t3_definition = pyquil.quil.DefGate("SQRT-X-T3", sqrt_x_t3)
SQRT_X_T3 = sqrt_x_t3_definition.get_constructor()
program += sqrt_x_definition
program += sqrt_x_t2_definition
program += sqrt_x_t3_definition
program += g.CNOT(0, 1)
program += SQRT_X(0)
program += SQRT_X_T2(1, 2)
program += SQRT_X_T3(1, 0, 2)
program += g.CNOT(0, 1)
program += g.CNOT(1, 2)
program += g.CNOT(2, 0)
with OperationRecorder() as rec:
load_program(program)(wires=range(3))
expected_queue = [
qml.CNOT(wires=[0, 1]),
qml.QubitUnitary(sqrt_x, wires=[0]),
qml.QubitUnitary(sqrt_x_t2, wires=[1, 2]),
qml.QubitUnitary(sqrt_x_t3, wires=[1, 0, 2]),
qml.CNOT(wires=[0, 1]),
qml.CNOT(wires=[1, 2]),
qml.CNOT(wires=[2, 0]),
]
for converted, expected in zip(rec.queue, expected_queue):
assert converted.name == expected.name
assert converted.wires == expected.wires
assert converted.params == expected.params
def test_convert_program_with_controlled_defgates(self, tol):
"""Test that a program with controlled defined gates is properly
converted."""
program = pyquil.Program()
sqrt_x = np.array([[0.5 + 0.5j, 0.5 - 0.5j], [0.5 - 0.5j, 0.5 + 0.5j]])
sqrt_x_t2 = np.kron(sqrt_x, sqrt_x)
c_sqrt_x = np.eye(4, dtype=complex)
c_sqrt_x[2:, 2:] = sqrt_x
c_sqrt_x_t2 = np.eye(8, dtype=complex)
c_sqrt_x_t2[4:, 4:] = sqrt_x_t2
sqrt_x_definition = pyquil.quil.DefGate("SQRT-X", sqrt_x)
SQRT_X = sqrt_x_definition.get_constructor()
sqrt_x_t2_definition = pyquil.quil.DefGate("SQRT-X-T2", sqrt_x_t2)
SQRT_X_T2 = sqrt_x_t2_definition.get_constructor()
program += sqrt_x_definition
program += sqrt_x_t2_definition
program += g.CNOT(0, 1)
program += SQRT_X(0).controlled(1)
program += SQRT_X_T2(1, 2).controlled(0)
program += g.X(0).controlled(1)
program += g.RX(0.4, 0)
with OperationRecorder() as rec:
load_program(program)(wires=range(3))
expected_queue = [
qml.CNOT(wires=[0, 1]),
qml.QubitUnitary(c_sqrt_x, wires=[1, 0]),
qml.QubitUnitary(c_sqrt_x_t2, wires=[0, 1, 2]),
qml.CNOT(wires=[1, 0]),
qml.RX(0.4, wires=[0]),
]
for converted, expected in zip(rec.queue, expected_queue):
assert converted.name == expected.name
assert converted.wires == expected.wires
assert np.allclose(converted.params,
expected.params,
atol=tol,
rtol=0)
def test_convert_program_with_defpermutationgates(self):
"""Test that a program with gates defined via DefPermutationGate is
properly converted."""
program = pyquil.Program()
expected_matrix = np.eye(4)
expected_matrix = expected_matrix[:, [1, 0, 3, 2]]
x_plus_x_definition = pyquil.quil.DefPermutationGate(
"X+X", [1, 0, 3, 2])
X_plus_X = x_plus_x_definition.get_constructor()
program += x_plus_x_definition
program += g.CNOT(0, 1)
program += X_plus_X(0, 1)
program += g.CNOT(0, 1)
with OperationRecorder() as rec:
load_program(program)(wires=range(2))
expected_queue = [
qml.CNOT(wires=[0, 1]),
qml.QubitUnitary(expected_matrix, wires=[0, 1]),
qml.CNOT(wires=[0, 1]),
]
for converted, expected in zip(rec.queue, expected_queue):
assert converted.name == expected.name
assert converted.wires == expected.wires
assert np.array_equal(converted.params, expected.params)
def test_convert_program_with_controlled_defpermutationgates(self):
"""Test that a program that uses controlled permutation gates
is properly converted."""
program = pyquil.Program()
expected_matrix = np.eye(4)
expected_matrix = expected_matrix[:, [1, 0, 3, 2]]
expected_controlled_matrix = np.eye(8)
expected_controlled_matrix[4:, 4:] = expected_matrix
x_plus_x_definition = pyquil.quil.DefPermutationGate(
"X+X", [1, 0, 3, 2])
X_plus_X = x_plus_x_definition.get_constructor()
program += x_plus_x_definition
program += g.CNOT(0, 1)
program += X_plus_X(0, 1).controlled(2)
program += X_plus_X(1, 2).controlled(0)
program += g.CNOT(0, 1)
with OperationRecorder() as rec:
load_program(program)(wires=range(3))
expected_queue = [
qml.CNOT(wires=[0, 1]),
qml.QubitUnitary(expected_controlled_matrix, wires=[2, 0, 1]),
qml.QubitUnitary(expected_controlled_matrix, wires=[0, 1, 2]),
qml.CNOT(wires=[0, 1]),
]
for converted, expected in zip(rec.queue, expected_queue):
assert converted.name == expected.name
assert converted.wires == expected.wires
assert np.array_equal(converted.params, expected.params)
def test_forked_gate_error(self):
"""Test that an error is raised if conversion of a
forked gate is attempted."""
program = pyquil.Program()
program += g.CNOT(0, 1)
program += g.RX(0.3, 1).forked(2, [0.5])
program += g.CNOT(0, 1)
with pytest.raises(
qml.DeviceError,
match=
"Forked gates can not be imported into PennyLane, as this functionality is not supported",
):
load_program(program)(wires=range(3))
def I(qubit) -> None:
program_context().inst(gates.I(qubit))
def calculate(self):
'''Processes the quantum circuit and returns the results'''
p = Program()
# Gets definitions for quarter & eighth turn gates
p = self.define_extra_gates(p)
# length of circuit = number of columns
col_length = len(self.circuit)
num_qubits = 0
# max length of any number of operations per column = number of qubits / rows used
for i in self.circuit:
if len(i) > num_qubits: num_qubits = len(i)
# loops over each gate in circuit and applies the gate
for i in range(col_length):
# Keeps track of where special components are (i.e. SWAP)
special_loc = []
# Obtains any controls in the column i; if present, each gate is made into a controlled gate, else the gate is normal
control_qubits, anticontrol_qubits = self.get_controls_in_column(i)
# To apply anticontrols, X gate needs to be applied to the corresponding qubit wire and applied again after column is processed
for qubit in anticontrol_qubits: p += pqg.X(qubit)
for j in range(len(self.circuit[i])):
current_gate = str(self.circuit[i][j]).upper()
# If the gate is X, Y, Z or H, apply the gate to qubit #j
if current_gate in "H": p += pqg.H(j).controlled(control_qubits)
elif current_gate in "X": p += pqg.X(j).controlled(control_qubits)
elif current_gate in "Y": p += pqg.Y(j).controlled(control_qubits)
elif current_gate in "Z": p += pqg.Z(j).controlled(control_qubits)
# If the gate is a quarter turn (+/- 90 deg or pi/2) for X, Y or Z, apply the respective gate
elif current_gate in ("X^1/2", "X^½"): p += POS_SQRT_X(j).controlled(control_qubits)
elif current_gate in ('X^-1/2', 'X^-½'): p += NEG_SQRT_X(j).controlled(control_qubits)
elif current_gate in ("Y^1/2", "Y^½"): p += POS_SQRT_Y(j).controlled(control_qubits)
elif current_gate in ("Y^-1/2", "Y^-½"): p += NEG_SQRT_Y(j).controlled(control_qubits)
elif current_gate in ("Z^1/2", "Z^½", "S"): p += POS_SQRT_Z(j).controlled(control_qubits)
elif current_gate in ("Z^-1/2", "Z^-½", "S^-1"): p += NEG_SQRT_Z(j).controlled(control_qubits)
# If the gate is an eighth turn (+/- 45 deg or pi/4) for X, Y or Z, apply the respective gate
elif current_gate in ("X^1/4", "X^¼"): p += POS_FTRT_X(j).controlled(control_qubits)
elif current_gate in ("X^-1/4", "X^-¼"): p += NEG_FTRT_X(j).controlled(control_qubits)
elif current_gate in ("Y^1/4", "Y^¼"): p += POS_FTRT_Y(j).controlled(control_qubits)
elif current_gate in ("Y^-1/4", "Y^-¼"): p += NEG_FTRT_Y(j).controlled(control_qubits)
elif current_gate in ("Z^1/4", "Z^¼", "T"): p += POS_FTRT_Z(j).controlled(control_qubits)
elif current_gate in ("Z^-1/4", "Z^-¼", "T^-1"): p += NEG_FTRT_Z(j).controlled(control_qubits)
# If the gate is a SWAP gate, check if another one has been found before and perform the SWAP operation
# If not, keep track of its location until we find the other SWAP gate
elif current_gate in "SWAP":
if len(special_loc) == 1:
p += pqg.SWAP(special_loc[0], j).controlled(control_qubits)
special_loc = []
else:
special_loc.append(j)
else: p += pqg.I(j)
# Reverses the process used to make anticontrols possible
for qubit in anticontrol_qubits: p += pqg.X(qubit)
self.construct_results_dict(p)
return self.results