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Quantum fast Fourier transform using multilevel atoms
Ashok Muthukrishnan and C. R. Stroud, Jr.
J. Mod. Opt. 49, 21152127 (2002).
We propose an implementation of the quantum fast Fourier transform algorithm in an entangled system of multilevel atoms. The Fourier transform occurs naturally in the unitary time evolution of energy eigenstates and is used to define an alternative wavepacket basis for quantum information in the atom. A change of basis from energy levels to wave packets amounts to a discrete quantum Fourier transform within each atom. The algorithm then reduces to a series of conditional phase transforms between two entangled atoms in mixed energy and wavepacket bases. We show how to implement such transforms using wavepacket control of the internal states of the ions in the linear iontrap scheme for quantum computing.
Click here to download the .pdf version of the paper
muthukrishnan022.pdf (266 KB)
Web page maintained by
Hideomi Nihira ( nihira@optics.rochester.edu ).
Last modified 13 September 2006
