How to realize a universal quantum gate with trapped ions

Abstract

We report the realization of an elementary quantum processor based on a linear crystal of trapped ions. Each ion serves as a quantum bit (qubit) to store the quantum information in long lived electronic states. We present the realization of single-qubit and of universal two-qubit logic gates. The qwo-qubit operation relies on the coupling of the ions through their collective quantized motion. A detailed description of the setup and the methods is included.

More detailed information as compared to Schmidt-Kaler et al., nature 422,408 (2003)

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• How to realize a universal quantum gate with trapped ions

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