Physicists around the world are searching for the best way to realize a quantum computer. Now scientists of the team around Stefan Kuhr and the NIM member Immanuel Bloch at the Max Planck Institute of Quantum Optics (Garching/Munich) took a decisive step in this direction. They could address and change the spin of single atoms with laser light and arrange them in arbitrary patterns. In this way, the physicists strung the atoms along a line and could directly observe their tunnelling dynamics in a “racing duel” of the atoms. (Nature 471, 2011) (Source: MPQ).

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