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Phys Rev Lett. 2001 Dec 17;87(25):257904. Epub 2001 Nov 29.

Ion-trap quantum logic using long-wavelength radiation.

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1
I. Institut für Theoretische Physik, Universität Hamburg, Jungiusstrasse 9, 20355 Hamburg, Germany.

Erratum in

  • Phys Rev Lett. 2003 Jul 11;91(2):029902.

Abstract

A quantum information processor is proposed that combines experimental techniques and technology successfully demonstrated either in nuclear magnetic resonance experiments or with trapped ions. An additional inhomogeneous magnetic field applied to an ion trap (i) shifts individual ionic resonances (qubits), making them distinguishable by frequency, and (ii) mediates the coupling between internal and external degrees of freedom of trapped ions. This scheme permits one to individually address and coherently manipulate ions confined in an electrodynamic trap using radiation in the radiofrequency or microwave regime.

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