cirq.is_cptp

Determines if a channel is completely positive trace preserving (CPTP).

cirq.is_cptp(
    *,
    kraus_ops: Sequence[np.ndarray],
    rtol: float = 1e-05,
    atol: float = 1e-08
)

A channel composed of Kraus operators K[0:n] is a CPTP map if the sum of the products adjoint(K[i]) * K[i]) is equal to 1.

Args
`kraus_ops`	The Kraus operators of the channel to check.
`rtol`	The relative tolerance on equality.
`atol`	The absolute tolerance on equality.

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Last updated 2024-06-27 UTC.

Args