qiskit.circuit.QuantumCircuit.depth

QuantumCircuit.depth(filter_function=<function QuantumCircuit.<lambda>>)

Return circuit depth (i.e., length of critical path).

Parameters

filter_function (callable) -- A function to filter instructions. Should take as input a tuple of (Instruction, list(Qubit), list(Clbit)). Instructions for which the function returns False are ignored in the computation of the circuit depth. By default filters out "directives", such as barrier or snapshot.

Returns

Depth of circuit.

Return type

int

Notes

The circuit depth and the DAG depth need not be the same.