tqec.noise_models.after_clifford_depolarization.is_clifford

is_clifford(operation: Operation) → bool

Inefficiently checks if a given operation implements a Clifford operation.

The check is implemented by recovering the unitary matrix of the operation and trying to initialise a stim.Tableau from it. Both steps are costly for large operations, which is the reason why this function will print a warning if the provided operation is considered “large” (3 qubits or more at the moment).

Parameters:

operation – the operation that will be checked.

Returns:

True if the provided cirq.Operation instance is a Clifford operation, else False.