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Quantum 2.0 Conference and Exhibition

Next-generation trapped-ion quantum computing system

Alexander E. Kozhanov, Yichao Yu, Liudmila A. Zhukas, Lei Feng, Debopriyo Biswas, Bahaa Harraz, Keqin Yan, Vivian Zhang, Crystal Noel, Christopher R. Monroe

Published Jan 1, 2023• 2 citations
Publisher

Abstract

In this work we discuss the progress of commissioning the next-generation trapped-ion quantum computing system. Heating rates, coherence times, background gas collision rates, individual-addressing cross-talk and other factors contributing to the gate fidelity are discussed.
DOI
10.1364/quantum.2023.qm3a.2

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Individual addressing with low crosstalk is crucial for high-fidelity quantum gates in trapped-ion systems, but technical challenges in reducing ion crosstalk have thwarted progress. This study uses symmetrically configured acousto-optic deflectors to achieve a Rabi-rate crosstalk as low as $1.19(5)\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}3}$. Additionally, such deflectors offer flexible manipulation and two-dimensional addressing, making them a promising platform for scalable quantum circuits. This result could significantly advance the practical application of fault-tolerant quantum computing.
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