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Multi-particle entanglement of hot trapped ions

Klaus Molmer·Anders Sorensen
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Abstract

We propose an efficient method to produce multi-particle entangled states of ions in an ion trap for which a wide range of interesting effects and applications have been suggested. Our preparation scheme exploits the collective vibrational motion of the ions, but it works in such a way that this motion need not be fully controlled in the experiment. The ions may, e.g., be in thermal motion and exchange mechanical energy with a surrounding heat bath without detrimental effects on the internal state preparation. Our scheme does not require access to the individual ions in the trap.

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Klaus Molmer, Anders Sorensen. 1999-01-26. Multi-particle entanglement of hot trapped ions. https://doi.org/10.1103/physrevlett.82.1835

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