Complete methods set for scalable ion trap quantum information processing

Details Complete methods set for scalable ion trap quantum information processing Complete methods set for scalable ion trap quantum information processing

2009-07-10

arxiv.org/abs/0907.1865v1

Science 325, 1227 (2009)

Physics

Quantum Physics

9 pages, 4 figures. Accepted to Science, and thus subject to a press embargo

Scientific paper

10.1126/science.1177077

Large-scale quantum information processors must be able to transport and maintain quantum information, and repeatedly perform logical operations. Here we demonstrate a combination of all the fundamental elements required to perform scalable quantum computing using qubits stored in the internal states of trapped atomic ions. We quantify the repeatability of a multi-qubit operation, observing no loss of performance despite qubit transport over macroscopic distances. Key to these results is the use of different pairs of beryllium ion hyperfine states for robust qubit storage, readout and gates, and simultaneous trapping of magnesium re-cooling ions along with the qubit ions.

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