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  Integrated Be-9(+) multi-qubit gate device for the ion-trap quantum computer

Hahn, H., Zarantonello, G., Schulte, M., Bautista-Salvador, A., Hammerer, K., & Ospelkaus, C. (2019). Integrated Be-9(+) multi-qubit gate device for the ion-trap quantum computer. npj Quantum Information, 5: 70. doi:10.1038/s41534-019-0184-5.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0004-9BE2-E Version Permalink: http://hdl.handle.net/21.11116/0000-0004-9BE8-8
Genre: Journal Article

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 Creators:
Hahn, Henning, Author
Zarantonello, Giorgio, Author
Schulte, Marius1, Author              
Bautista-Salvador, Amado, Author
Hammerer, Klemens1, Author              
Ospelkaus, Christian, Author
Affiliations:
1Laser Interferometry & Gravitational Wave Astronomy, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society, ou_24010              

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Free keywords: Quantum Physics, quant-ph
 Abstract: We demonstrate the experimental realization of a two-qubit M{\o}lmer-S{\o}rensen gate on a magnetic field-insensitive hyperfine transition in $^9$Be$^+$ ions using microwave-near fields emitted by a single microwave conductor embedded in a surface-electrode ion trap. The design of the conductor was optimized to produce a high oscillating magnetic field gradient at the ion position. The measured gate fidelity is determined to be $98.2\pm1.2\,\%$ and is limited by technical imperfections, as is confirmed by a comprehensive numerical error analysis. The conductor design can potentially simplify the implementation of multi-qubit gates and represents a self-contained, scalable module for entangling gates within the quantum CCD architecture for an ion-trap quantum computer.

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 Dates: 2019-02-192019-09-042019
 Publication Status: Published in print
 Pages: 4 figures, 1 table
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 Table of Contents: -
 Rev. Method: -
 Identifiers: arXiv: 1902.07028
DOI: 10.1038/s41534-019-0184-5
URI: http://arxiv.org/abs/1902.07028
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Title: npj Quantum Information
Source Genre: Journal
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Pages: - Volume / Issue: 5 Sequence Number: 70 Start / End Page: - Identifier: -