, Volume 77, Issue 8, pp 789-796
Date: 13 Nov 2003

How to realize a universal quantum gate with trapped ions

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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 two-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.


03.67.Lx; 03.65.Ud; 32.80.Pj