def test_register_noise():
class _FooNoise(Noise):
def __init__(self):
super().__init__(qubit_count=1, ascii_symbols=["foo"])
Noise.register_noise(_FooNoise)
assert Noise._FooNoise().name == _FooNoise().name
target (Qubit, int, or iterable of Qubit / int): Target qubit(s)
probability (float): Probability of bit flipping.
Returns:
Iterable[Instruction]: `Iterable` of BitFlip instructions.
Examples:
>>> circ = Circuit().bit_flip(0, probability=0.1)
"""
return [
Instruction(Noise.BitFlip(probability=probability), target=qubit)
for qubit in QubitSet(target)
]
Noise.register_noise(BitFlip)
class PhaseFlip(SingleProbabilisticNoise):
"""Phase flip noise channel which transforms a density matrix :math:`\\rho` according to:
.. math:: \\rho \\Rightarrow (1-p) \\rho + p X \\rho X^{\\dagger}
where
.. math::
I = \\left(
\\begin{matrix}
1 & 0 \\\\
0 & 1
\\end{matrix}
\\right)
