tqec.circuit.qubit.count_qubit_accesses

count_qubit_accesses(circuit: Circuit) → dict[int, int]

Count the number of times a given qubit is used by an instruction that is not an annotation.

Note

If a REPEAT instruction is found, each qubit access within the repeated block will be multiplied by the number of time the block is repeated.

Parameters:

circuit – circuit containing the gates.

Returns:

a mapping from qubit indices (as keys) to the number of non-annotation instructions that have this qubit index as target (as values).