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Front. Quantum Sci. Technol.
Sec. Basic Science for Quantum Technologies
Volume 3 - 2024 | doi: 10.3389/frqst.2024.1352800

Precise Micromotion Compensation of a Tilted Ion Chain Provisionally Accepted

 Craig W. Hogle1*  Ashlyn D. Burch1 Jonathan D. Sterk1 Matthew N. Chow1  Megan Ivory1 Daniel S. Lobser1  Peter Maunz2 Jay Van Der Wall1 Christopher G. Yale1 Susan M. Clark1 Daniel Stick1 Melissa C. Revelle1
  • 1Sandia National Laboratories, United States
  • 2IonQ Inc, United States

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Excess micromotion can be a substantial source of errors in trapped-ion based quantum processors and clocks due to the sensitivity of the internal states of the ion to external fields and motion. This problem can fixed by compensating background electric fields in order to position ions at the RF node and minimize their driven micromotion. Here we describe techniques for compensating ion chains in scalable surface ion traps. These traps are capable of cancelling stray electric fields with fine spatial resolution in order to compensate multiple closely spaced ions due to their large number of relatively small control electrodes. We demonstrate a technique that compensates an ion chain to better than 5 V/m and within 0.1 degrees of chain rotation.

Keywords: trapped ions, Quantum information, micromotion, ion chains, qubits

Received: 08 Dec 2023; Accepted: 07 Feb 2024.

Copyright: © 2024 Hogle, Burch, Sterk, Chow, Ivory, Lobser, Maunz, Van Der Wall, Yale, Clark, Stick and Revelle. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

* Correspondence: Mx. Craig W. Hogle, Sandia National Laboratories, Albuquerque, United States