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arXiv 2008.10933quant-ph
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囚禁离子自旋-自旋动力学的相位自适应动态解耦方法

Phase-adaptive dynamical decoupling methods for robust spin-spin dynamics in trapped ions

Lijuan Dong, Iñigo Arrazola, Xi Chen, Jorge Casanova

备注：
10 pages, 4 figures
发表信息：
Phys. Rev. Applied 15, 034055 (2021)
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摘要：

基于捕获离子的量子平台是构建量子硬件的主要候选者，其计算能力大大超过经典设备。在这些设置中的可用控制技术中，脉冲动态解耦（脉冲DD）显示为处理离子寄存器中编码的信息的有用方法，同时最小化它们上的环境噪声。在这项工作中，我们采用了脉冲DD技术，使用随机脉冲相位，或相关的脉冲相位，显着提高纠缠自旋自旋动力学在被困离子的鲁棒性。这个过程最初设想的背景下，核磁共振核自旋检测的目的，在这里，我们证明了同样的原则适用于强大的量子信息处理中的陷阱离子设置。

英文摘要：

Quantum platforms based on trapped ions are main candidates to build a quantum hardware with computational capacities that largely surpass those of classical devices. Among the available control techniques in these setups, pulsed dynamical decoupling (pulsed DD) revealed as a useful method to process the information encoded in ion registers, whilst minimising the environmental noise over them. In this work, we incorporate a pulsed DD technique that uses random pulse phases, or correlated pulse phases, to significantly enhance the robustness of entangling spin-spin dynamics in trapped ions. This procedure was originally conceived in the context of nuclear magnetic resonance for nuclear spin detection purposes, and here we demonstrate that the same principles apply for robust quantum information processing in trapped-ion settings.

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