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Trapped Ion Quantum Computing Quantum Simulation

Robust and High-Fidelity Controlled Two-Qubit Gates via Asymmetric Parallel Resonant Excitation

arXiv

Authors: Licheng Lin, Jize Han, Peng Zhu, Ziyu Wang, Ying Yan, Jie Lu, Zhiguo Huang

Year

2026

Paper ID

45447

Status

Preprint

Abstract Read

~2 min

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Abstract

Implementing high-fidelity controlled two-qubit gates in dipole-dipole interacting systems, such as rare-earth-ion crystals, in hindered by spectral inhomogeneity and weak coupling. Existing method often rely on detuned pulses, making them susceptible to frequency errors and AC Stark shifts. We propose a robust resonant scheme for arbitrary controlled two-qubit gates that utilizes asymmetric excitation and pulse engineering to achieve decoupled, parallel qubit control. Simulations on rare-earth-ion ensemble qubits demonstrate gate fidelities exceeding 99% within a 170 kHz detuning range with off-resonant excitation below 0.2%. This approach offers a robust, scalable route for quantum computing in spectrally crowded systems.

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Implementing high-fidelity controlled two-qubit gates in dipole-dipole interacting systems, such as rare-earth-ion crystals, in hindered by spectral inhomogeneity and weak...

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References & Citation Signals

[1] DOI https://doi.org/arXiv:2604.07163 [2] arXiv https://arxiv.org/abs/2604.07163 [3] Publisher https://arxiv.org/abs/2604.07163

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