Ion shuttling based on accurate potential control technology

Mengliang Xu; Yi Xie; Ting Chen; Jie Zhang; Manchao Zhang; Wenbo Su; Xieqian Li; Ting Zhang; Wei Wu; Pingxing Chen

doi:10.1117/12.3007674

24 November 2023 Ion shuttling based on accurate potential control technology

Mengliang Xu, Yi Xie, Ting Chen, Jie Zhang, Manchao Zhang, Wenbo Su, Xieqian Li, Ting Zhang, Wei Wu, Pingxing Chen

Proceedings Volume 12935, Fourteenth International Conference on Information Optics and Photonics (CIOP 2023); 129352P (2023) https://doi.org/10.1117/12.3007674
Event: Fourteenth International Conference on Information Optics and Photonics (CIOP 2023), 2023, Xi’an, China

Abstract

We have developed fast and accurate protocols for ion shuttling in a surface-electrode ion trap, which allows efficient splitting and merging of two ions. These protocols are based on innovative improvements in the driving potential field model, where voltage is introduced as a variable parameter. This enhancement specifically addresses the issue of increased control errors that occur with larger inter-ion distances. We have devised a general model-solving procedure that uses a parameterized model to describe the total potential energy of the two ions and ions oscillating eigenfrequency in a dynamical normal modes. By employing optimization techniques, we determine optimal voltage ramps for the dynamic potential field, enabling accurate control of physical quantities during the splitting process. In additionally, through simulating the classical dynamics of the theoretical scheme, we decouple the ion oscillations by employing discrete Fourier transform (DFT) and nonlinear fitting techniques. Two ions are separated into individual potential wells with a distance of 200 μ𝑚 within 50 μs. The ion position drift is only 0.01%. During the splitting process, the frequency fluctuation of the center-of-mass mode of the ions is less than 0.69%, and the minimum average excitation of a single ion is 0.02 phonon. Accurate and fast ion shuttling technology facilitates the development of large-scale trapped-ion quantum computing. Maintaining the ions oscillating eigenfrequency constant during the shuttling operation alleviates the problem of decoherence of quantum information.

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Mengliang Xu, Yi Xie, Ting Chen, Jie Zhang, Manchao Zhang, Wenbo Su, Xieqian Li, Ting Zhang, Wei Wu, and Pingxing Chen "Ion shuttling based on accurate potential control technology", Proc. SPIE 12935, Fourteenth International Conference on Information Optics and Photonics (CIOP 2023), 129352P (24 November 2023); https://doi.org/10.1117/12.3007674

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KEYWORDS

Ions

Electrodes

Quantum processes

Quantum computing

Quantum communications

Quantum technologies

Quantum information

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