Complete Methods Set for Scalable Ion Trap Quantum Information Processing

Sep 4, 2009
4 pages
Published in:
  • Science 325 (2009) 5945, 1227-1230
  • Published: Sep 4, 2009

Citations per year

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Abstract: (American Association for the Advancement of Science)
Large-scale quantum information processors must be able to transport and maintain quantum information and repeatedly perform logical operations. Here, we show a combination of all of the fundamental elements required to perform scalable quantum computing through the use of qubits stored in the internal states of trapped atomic ions. We quantified the repeatability of a multiple-qubit operation and observed no loss of performance despite qubit transport over macroscopic distances. Key to these results is the use of different pairs of 9Be+ hyperfine states for robust qubit storage, readout, and gates, and simultaneous trapping of 24Mg+ “re-cooling” ions along with the qubit ions.