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Poster Session

Poster Session II

4:00 pm – 6:00 pm, Wednesday June 18 Session H00 Oregon Convention Center, Exhibit Hall E
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Scalable, high-fidelity all-electronic control of trapped-ion qubits

Poster 72
Presenter: Jacopo Mosca Toba (Oxford Ionics)
Authors: Clemens Löschnauer (Oxford Ionics), Amy Hughes (Oxford Ionics), Steven King (Oxford Ionics Ltd), Marius Weber (Oxford Ionics), Raghavendra Srinivas (Oxford Ionics), Roland Matt (Oxford Ionics), Rustin Nourshargh (Oxford Ionics), David Allcock (Oxford Ionics), Chris Ballance (Oxford Ionics), Clemens Matthiesen (Oxford Ionics), Maciej Malinowski (Oxford Ionics), Thomas Harty (Oxford Ionics)

The central challenge of quantum computing is implementing high-fidelity quantum gates in a scalable fashion. Our all-electronic qubit control architecture combines laser-free gates with local tuning of electric potentials to enable site-selective single- and two-qubit operations in multi-zone quantum processors. Chip-integrated antennas deliver control fields common to all qubits, while voltages applied to local tuning electrodes adjust the position and motion of ions in each zone, thus enabling local coherent control. We experimentally implement low-noise, site-selective single- and two-qubit control in a microfabricated 7-zone ion trap, demonstrating 99.99916(7)% fidelity for single-qubit gates, and two-qubit Bell state generation with 99.97(1)% fidelity. These results validate the path to directly scaling these techniques to large-scale quantum computers based on electronically controlled trapped-ion qubits.

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