Cavity QED implementation of the discrete quantum Fourier transform
Marlan O. Scully, Muhammad Suhail Zubairy · Physical Review A · 2002
We present a scheme for the implementation of the discrete quantum Fourier transform using cavity quantum electrodynamics. In the proposed scheme a series of atoms whose atomic coherence carries the input state passes through a series of cavities and classical field, and the resulting state in the cavities is the quantum Fourier transform of the input state.