# Circuits (qiskit.aqua.circuits)¶

Collection of circuits and gates that may be used to build quantum algorithms and components.

Nota

As of Aqua 0.7.0 Gates that were formerly here such as mct etc., that were initially built out to facilitate the development of Aqua algorithms, have been moved into Terra.

Likewise there are Circuits here, that are now deprecated, which have been moved and have updated versions in Terra qiskit.circuit.library which should be used for any future work. The circuit documentation here indicates the corresponding replacement circuit in the library.

# Circuits¶

 CNF Class for constructing circuits for Conjunctive Normal Forms DNF Class for constructing circuits for Disjunctive Normal Forms ESOP Class for constructing circuits for Exclusive Sum of Products PhaseEstimationCircuit Quantum Phase Estimation Circuit. StateVectorCircuit Arbitrary State-Vector Circuit. WeightedSumOperator Adds q^T * w to separate register for non-negative integer weights w.