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

MPG-Autoren
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Schulte,  Marius
Laser Interferometry & Gravitational Wave Astronomy, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;

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Hammerer,  Klemens
Laser Interferometry & Gravitational Wave Astronomy, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;

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1902.07028.pdf
(Preprint), 530KB

s41534-019-0184-5.pdf
(Verlagsversion), 907KB

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Zitation

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.


Zitierlink: https://hdl.handle.net/21.11116/0000-0004-9BE2-E
Zusammenfassung
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.