Fast nuclear-spin entangling gates compatible with large-scale atomic arrays

• URL: http://arxiv.org/abs/2312.06327v1
• Date: Mon, 11 Dec 2023 12:21:08 GMT
• Title: Fast nuclear-spin entangling gates compatible with large-scale atomic arrays
• Authors: Xiao-Feng Shi and Yan Lu
• Abstract summary: Nuclear-spin entangling gates with divalent atoms can be executed by one global laser pulse. Nuclear-spin entangling gates with divalent atoms can be executed by one global laser pulse.
• Score: 15.929891047245482
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Nuclear-spin entangling gates with divalent atoms can be executed by one global laser pulse when $\Delta_{\text{Z}}<\Omega$, where $\Delta_{\text{Z}}$ is the Zeeman-splitting-dominated frequency difference for the clock-Rydberg transitions of the two nuclear-spin qubit states and $\Omega$ is the maximal Rabi frequency. Concerning the sensitivity of Rydberg-state energy to magnetic fluctuation, the gate is compatible with large-scale atomic arrays for weaker magnetic field is suitable for ensuring uniform field in a large qubit array. The gate can have a high fidelity because the relaxation and dephasing of Rydberg states, which limit the fidelity and grow with $1/\Omega$, can be mitigated with easily attainable large $\Omega$.

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