AI 中文总结
该研究在omg架构中实现了电路中间的基态冷却与辅助量子比特读出，为囚禁离子容错量子计算机提供了关键基础操作。
AI 中文摘要
用于量子处理器的囚禁离子光亚稳态基态（omg）架构，可实现双物种实验的全部功能，包括协同冷却与非破坏性辅助量子比特读出，且无需相应硬件开销。我们证实，可通过对基态（g）量子比特执行耗散操作，将混合亚稳态基态库仑晶体的全局运动模式冷却至运动基态，且不会干扰亚稳态（m）量子比特的相干性。这使得量子逻辑光谱学能够利用g量子比特的荧光检测，非破坏性地读出m量子比特的状态。将这些演示扩展至更大系统规模，应能缓解离子穿梭后的运动加热问题，并实现量子纠错的校正子提取，二者均是未来基于囚禁离子的容错量子计算机的关键基础操作。
英文摘要
The trapped-ion optical-metastable-ground ($\textit{omg}$) architecture for quantum processors promises the full functionality of two-species experiments, including sympathetic cooling and non-destructive ancilla readout, without the corresponding hardware overhead. We confirm that we can cool a global motional mode of a mixed metastable-ground state Coulomb crystal to the motional ground state via dissipative operations on the ground ($\textit{g}$) qubit without disturbing coherence of the metastable ($\textit{m}$) qubit. This enables quantum logic spectroscopy to non-destructively readout the state of the $\textit{m}$ qubit using fluorescence detection of the $\textit{g}$ qubit. Extensions of these demonstrations to larger system sizes should enable the mitigation of motional heating after ion shuttling and syndrome extraction for quantum error correction, both crucial primitives for future fault-tolerant quantum computers based on trapped ions.
Comments16 pages, 10 figures, 2 tables
