def test_to_json():
dev = PasqalDevice(qubits=[cirq.NamedQubit('q4')])
d = dev._json_dict_()
assert d == {"qubits": [cirq.NamedQubit('q4')]}
vdev = PasqalVirtualDevice(control_radius=2, qubits=[TwoDQubit(0, 0)])
d = vdev._json_dict_()
assert d == {"control_radius": 2, "qubits": [cirq_pasqal.TwoDQubit(0, 0)]}
def test_value_equal():
dev = PasqalDevice(qubits=[cirq.NamedQubit('q1')])
assert PasqalDevice(qubits=[cirq.NamedQubit('q1')]) == dev
dev = PasqalVirtualDevice(control_radius=1.0, qubits=[TwoDQubit(0, 0)])
assert PasqalVirtualDevice(control_radius=1.0, qubits=[TwoDQubit(0, 0)]) == dev
def test_init_errors():
line = cirq.devices.LineQubit.range(3)
with pytest.raises(TypeError, match="Unsupported qubit type"):
PasqalDevice(qubits=line)
with pytest.raises(ValueError, match="Too many qubits"):
generic_device(101)
with pytest.raises(TypeError, match="Unsupported qubit type"):
PasqalVirtualDevice(control_radius=1.0, qubits=[cirq.NamedQubit('q0')])
with pytest.raises(TypeError, match="All qubits must be of same type."):
PasqalVirtualDevice(control_radius=1.0,
qubits=[TwoDQubit(0, 0),
cirq.GridQubit(1, 0)])
with pytest.raises(
ValueError,
match="Control_radius needs to be a non-negative float"):
square_virtual_device(control_r=-1.0, num_qubits=2)
with pytest.raises(
ValueError,
match="Control_radius cannot be larger than "
"3 times the minimal distance between qubits.",
):
square_virtual_device(control_r=11.0, num_qubits=2)
def test_pasqal_converter():
q = cirq.NamedQubit.range(2, prefix='q')
g = cirq.testing.TwoQubitGate()
class FakeOperation(cirq.ops.GateOperation):
def __init__(self, gate, qubits):
self._gate = gate
self._qubits = qubits
@property
def qubits(self):
return self._qubits
def with_qubits(self, *new_qubits):
return FakeOperation(self._gate, new_qubits)
op = FakeOperation(g, q).with_qubits(*q)
d = PasqalDevice(q)
with pytest.raises(TypeError, match="Don't know how to work with"):
d.decompose_operation(op)
def test_get_op_string():
p_qubits = cirq.NamedQubit.range(2, prefix='q')
p_device = PasqalDevice(p_qubits)
noise_model = PasqalNoiseModel(p_device)
circuit = cirq.Circuit()
circuit.append(cirq.ops.HPowGate(exponent=0.5).on(p_qubits[0]))
with pytest.raises(ValueError, match='Got unknown operation:'):
for moment in circuit._moments:
_ = noise_model.noisy_moment(moment, p_qubits)
with pytest.raises(ValueError, match='Got unknown operation:'):
_ = noise_model.get_op_string(circuit)
def test_noise_model_init():
noise_model = PasqalNoiseModel(PasqalDevice([]))
assert noise_model.noise_op_dict == {
str(cirq.ops.YPowGate()): cirq.ops.depolarize(1e-2),
str(cirq.ops.ZPowGate()): cirq.ops.depolarize(1e-2),
str(cirq.ops.XPowGate()): cirq.ops.depolarize(1e-2),
str(cirq.ops.HPowGate(exponent=1)): cirq.ops.depolarize(1e-2),
str(cirq.ops.PhasedXPowGate(phase_exponent=0)): cirq.ops.depolarize(1e-2),
str(cirq.ops.CNotPowGate(exponent=1)): cirq.ops.depolarize(3e-2),
str(cirq.ops.CZPowGate(exponent=1)): cirq.ops.depolarize(3e-2),
str(cirq.ops.CCXPowGate(exponent=1)): cirq.ops.depolarize(8e-2),
str(cirq.ops.CCZPowGate(exponent=1)): cirq.ops.depolarize(8e-2),
}
with pytest.raises(TypeError, match="noise model varies between Pasqal's devices."):
PasqalNoiseModel(cirq.devices.UNCONSTRAINED_DEVICE)
def test_default_noise():
p_qubits = cirq.NamedQubit.range(2, prefix='q')
p_device = PasqalDevice(qubits=p_qubits)
noise_model = PasqalNoiseModel(p_device)
circuit = cirq.Circuit()
Gate_l = cirq.ops.CZPowGate(exponent=2)
circuit.append(Gate_l.on(p_qubits[0], p_qubits[1]))
p_circuit = cirq.Circuit(circuit, device=p_device)
n_mts = []
for moment in p_circuit._moments:
n_mts.append(noise_model.noisy_moment(moment, p_qubits))
assert n_mts == [[
cirq.ops.CZPowGate(exponent=2).on(NamedQubit('q0'), NamedQubit('q1')),
cirq.depolarize(p=0.05).on(NamedQubit('q0')),
cirq.depolarize(p=0.05).on(NamedQubit('q1')),
]]
def test_noisy_moments():
p_qubits = cirq.NamedQubit.range(2, prefix='q')
p_device = PasqalDevice(qubits=p_qubits)
noise_model = PasqalNoiseModel(p_device)
circuit = cirq.Circuit()
circuit.append(cirq.ops.CZ(p_qubits[0], p_qubits[1]))
circuit.append(cirq.ops.Z(p_qubits[1]))
p_circuit = cirq.Circuit(circuit)
n_mts = []
for moment in p_circuit._moments:
n_mts.append(noise_model.noisy_moment(moment, p_qubits))
assert n_mts == [
[
cirq.ops.CZ.on(NamedQubit('q0'), NamedQubit('q1')),
cirq.depolarize(p=0.03).on(NamedQubit('q0')),
cirq.depolarize(p=0.03).on(NamedQubit('q1')),
],
[cirq.ops.Z.on(NamedQubit('q1')), cirq.depolarize(p=0.01).on(NamedQubit('q1'))],
]
def generic_device(num_qubits) -> PasqalDevice:
return PasqalDevice(qubits=cirq.NamedQubit.range(num_qubits, prefix='q'))