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American Physical Society, Physical Review Letters, 17(110), 2013

DOI: 10.1103/physrevlett.110.173002

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Individual-Ion Addressing with Microwave Field Gradients

Journal article published in 2013 by U. Warring, C. Ospelkaus ORCID, Y. Colombe, R. Jördens, D. Leibfried, D. J. Wineland
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

Individual-qubit addressing is a prerequisite for many instances of quantum information processing. We demonstrate this capability on trapped-ion qubits with microwave near fields delivered by electrode structures integrated into a microfabricated surface-electrode trap. We describe four approaches that may be used in quantum information experiments with hyperfine levels as qubits. We implement individual control on two ^{25}Mg^{+} ions separated by 4.3 μm and find spin-flip crosstalk errors on the order of 10^{-3}.