Individually-addressed quantum gate interactions using dynamical decoupling

• URL: http://arxiv.org/abs/2309.02125v2
• Date: Mon, 5 Aug 2024 18:04:57 GMT
• Title: Individually-addressed quantum gate interactions using dynamical decoupling
• Authors: M. C. Smith, A. D. Leu, M. F. Gely, D. M. Lucas,
• Abstract summary: We propose a method to implement individually-addressed entangling gate interactions. We experimentally demonstrate the ability to suppress the effect of the state-dependent force using a single ion. We model the scheme for a 17-qubit ion crystal, and find that any pair of ions should be addressable with an average crosstalk error of $sim 10-5$.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: A leading approach to implementing small-scale quantum computers has been to use laser beams, focused to micron spot sizes, to address and entangle trapped ions in a linear crystal. Here we propose a method to implement individually-addressed entangling gate interactions, but driven by microwave fields, with a spatial-resolution of a few microns, corresponding to $10^{-5}$ microwave wavelengths. We experimentally demonstrate the ability to suppress the effect of the state-dependent force using a single ion, and find the required interaction introduces $3.7(4)\times 10^{-4}$ error per emulated gate in a single-qubit benchmarking sequence. We model the scheme for a 17-qubit ion crystal, and find that any pair of ions should be addressable with an average crosstalk error of $\sim 10^{-5}$.

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