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Trapped Ion Quantum Computing
High-fidelity, adaptive qubit measurements through repetitive information transfer
arXiv
Authors: D. B. Hume, T. Rosenband, D. J. Wineland
Year
2007
Paper ID
50316
Status
Preprint
Abstract Read
~2 min
Abstract Words
91
Citations
N/A
Abstract
Using two trapped ion species $rm{27Al^+}$ and $rm{9Be^+}$ as primary and ancillary systems, we implement qubit measurements based on the repetitive transfer of information and quantum nondemolition detection. The repetition provides a natural mechanism for an adaptive measurement strategy, which leads to exponentially lower error rates compared to using a fixed number of detection cycles. For a single qubit we demonstrate 99.94 % measurement fidelity. We also demonstrate a technique for adaptively measuring multiple qubit states using a single ancilla, and apply the technique to spectroscopy of an optical clock transition.
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- This paper contributes to the Trapped-Ion Quantum Computing research area in the Quantum Articles archive.
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- Using two trapped ion species rm^27Al^+ and rm^9Be^+ as primary and ancillary systems, we implement qubit measurements based on the repetitive transfer of information and...
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