Description

Apply \(N\)-qubit Quantum Fourier Transform (\(QFT_N\)) to the circuit. The formula: \[QFT_N\ket{\psi} = \frac{1}{\sqrt{N}} \sum_{x=0}^{N-1} \exp\left(\frac{2\pi i kx}{N}\right) \ket{x}\]

quantum_circuit::qft(qubit_targets, swap = true)

Parameters

• qubit_targets (array) — The target qubits
• swap (boolean, optional) — Swap the qubits. The default value is true

Return Value

• quantum_circuit — Returns the instance of class quantum_circuit

Usage Example

import quantum
 
qc = quantum_circuit(3)
 
qc.x(0)
qc.qft([0, 1, 2])

Documentation version: 1.1.03. Updated on: 11 February 2026.
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