Returns a maximum on the trace distance between this effect's input
) -> float
This method attempts a number of strategies to calculate this value.
Use the effect's
If the effect is unitary, calculate the trace distance bound from the
eigenvalues of the unitary matrix.
The effect of which the bound should be calculated
If any of the strategies return a result that is not Notimplemented and
not None, that result is returned. Otherwise, 1.0 is returned.
Result is capped at a maximum of 1.0, even if the underlying function
produces a result greater than 1.0