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arXiv · 2210.02372

Frequency-robust M{\o}lmer-S{\o}rensen gates via balanced contributions of multiple motional modes

Brandon P. Ruzic·Matthew N. H. Chow·Ashlyn D. Burch·Daniel Lobser·Melissa C. Revelle·Joshua M. Wilson·Christopher G. Yale·Susan M. Clark
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Abstract

In this work, we design and implement frequency-robust Molmer-Sorensen gates on a linear chain of trapped ions, using Gaussian amplitude modulation and a constant laser frequency. We select this frequency to balance the entanglement accumulation of all motional modes during the gate to produce a strong robustness to frequency error, even for long ion chains. We demonstrate this technique on a three-ion chain, achieving $<\,1\%$ reduction from peak fidelity over a $20\,$kHz range of frequency offset, and we analyze the performance of this gate design through numerical simulations on chains of two to 33 ions.

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Brandon P. Ruzic, Matthew N. H. Chow, Ashlyn D. Burch, Daniel Lobser, Melissa C. Revelle, Joshua M. Wilson, Christopher G. Yale, Susan M. Clark. 2022-10-05. Frequency-robust M{\o}lmer-S{\o}rensen gates via balanced contributions of multiple motional modes. https://arxiv.org/abs/2210.02372

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