FastCNOTUnitObjective

qiskit.transpiler.synthesis.aqc.FastCNOTUnitObjective(num_qubits, cnots)

Bases: CNOTUnitObjective

Implementation of objective function and gradient calculator, which is similar to DefaultCNOTUnitObjective but several times faster.

Parameters

• num_qubits (int (opens in a new tab)) – number of qubits.
• cnots (ndarray (opens in a new tab)) – a CNOT structure to be used in the optimization procedure.

---

Attributes

num_cnots

Returns: A number of CNOT units to be used by the approximate circuit.

num_thetas

Returns: Number of parameters (angles) of rotation gates in this circuit.

target_matrix

Returns: a matrix being approximated

---

Methods

gradient

gradient(param_values)

Computes the gradient of objective function. See description of the base class method.

Return type

ndarray (opens in a new tab)

objective

objective(param_values)

Computes the objective function and some intermediate data for the subsequent gradient computation. See description of the base class method.

Return type

float (opens in a new tab)