Quantum Fourier transform
= Quantum Fourier transform
{wiki=Quantum_Fourier_transform}
The Quantum Fourier Transform (QFT) is a quantum analogue of the classical discrete Fourier transform (DFT). It is a linear transformation that takes quantum states and transforms them into a superposition of frequencies, which is incredibly useful in various quantum algorithms, especially in algorithms for factoring integers and solving problems in quantum computing.