qrisp.QuantumSession.depth

QuantumSession.depth(depth_indicator: Callable[[Operation], int] = <function QuantumCircuit.<lambda>>, transpile: bool = True) → int

Returns the depth of the QuantumCircuit.

Note

The depth of a circuit that has not been transpiled may have very little correlation with its actual runtime, since composite gates are counted as a single layer.

Parameters:

depth_indicatorCallable[[Operation], int], optional

A function that receives an Operation instance and returns the time or logical depth that operation takes. By default every operation contributes a depth of 1.

transpilebool, optional

If True, the circuit is transpiled before the depth is calculated so that composite gates are fully decomposed into primitive operations. The default is True.

Returns:

int

The depth of the QuantumCircuit.

Examples

>>> from qrisp import QuantumCircuit
>>> qc = QuantumCircuit(3)
>>> qc.h(0)
>>> qc.cx(0, 1)
>>> qc.cx(1, 2)
>>> qc.depth()
3