cirq.SupportsTraceDistanceBound
An effect with known bounds on how easy it is to detect.
cirq.SupportsTraceDistanceBound(
*args, **kwargs
)
Used when deciding whether or not an operation is negligible. For example,
the trace distance between the states before and after a Z**0.00000001
operation is very close to 0, so it would typically be considered
negligible.
Methods
_trace_distance_bound_
View source
_trace_distance_bound_() -> float
A maximum on the trace distance between val
's input and output.
Generally this method is used when deciding whether to keep gates, so
only the behavior near 0 is important. Approximations that overestimate
the maximum trace distance are permitted. If, for any case, the bound
exceeds 1, this function will return 1. Underestimates are not
permitted.
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Last updated 2024-06-27 UTC.
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