Penning micro-trap for quantum computing

Shreyans Jain (), Tobias Sägesser, Pavel Hrmo, Celeste Torkzaban, Martin Stadler, Robin Oswald, Chris Axline, Amado Bautista-Salvador, Christian Ospelkaus, Daniel Kienzler and Jonathan Home
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Shreyans Jain: ETH Zürich
Tobias Sägesser: ETH Zürich
Pavel Hrmo: ETH Zürich
Celeste Torkzaban: ETH Zürich
Martin Stadler: ETH Zürich
Robin Oswald: ETH Zürich
Chris Axline: ETH Zürich
Amado Bautista-Salvador: Leibniz Universität Hannover
Christian Ospelkaus: Leibniz Universität Hannover
Daniel Kienzler: ETH Zürich
Jonathan Home: ETH Zürich

Nature, 2024, vol. 627, issue 8004, 510-514

Abstract: Abstract Trapped ions in radio-frequency traps are among the leading approaches for realizing quantum computers, because of high-fidelity quantum gates and long coherence times1–3. However, the use of radio-frequencies presents several challenges to scaling, including requiring compatibility of chips with high voltages4, managing power dissipation5 and restricting transport and placement of ions6. Here we realize a micro-fabricated Penning ion trap that removes these restrictions by replacing the radio-frequency field with a 3 T magnetic field. We demonstrate full quantum control of an ion in this setting, as well as the ability to transport the ion arbitrarily in the trapping plane above the chip. This unique feature of the Penning micro-trap approach opens up a modification of the quantum charge-coupled device architecture with improved connectivity and flexibility, facilitating the realization of large-scale trapped-ion quantum computing, quantum simulation and quantum sensing.

Date: 2024
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DOI: 10.1038/s41586-024-07111-x

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