AI 中文总结
研究中性原子与囚禁离子量子寄存器间的量子接口，提出并分析方案，通过光镊与保罗阱势实现里德堡囚禁，增强原子 - 离子极化相互作用，实现对MS门的条件控制，为确定性原子 - 离子混合量子门和量子接口建立实用途径。
AI 中文摘要
结合中性原子和囚禁离子的混合量子系统有望整合原子阵列的可扩展性与囚禁离子平台中的高保真控制。本文提出并分析了单个囚禁中性原子与囚禁离子晶体之间的量子接口。在我们的方案中，光镊中囚禁的中性88Sr原子与小的88Sr+离子晶体相互作用，通过将原子激发到里德堡态，强烈增强原子 - 离子极化相互作用，导致离子集体运动模式的状态依赖修改。我们表明这种频移实现了对MS门的条件控制，使中性原子能够作为两个离子之间纠缠操作的控制量子比特。我们通过分析光镊和保罗阱势中的里德堡囚禁来研究该方案的可行性，确定负极化率里德堡态对稳定囚禁特别有利。我们进一步评估了相关的囚禁条件、里德堡寿命和相干要求，并表明所提出的接口与实际实验参数兼容。这些结果为确定性原子 - 离子混合量子门和量子接口建立了一条实用途径。
英文摘要
Hybrid quantum systems combining neutral atoms and trapped ions offer the prospect of integrating the scalability of atom arrays with the high-fidelity control available in trapped-ion platforms. Here we propose and analyze a quantum interface between individually trapped neutral atoms and a trapped-ion crystal. In our scheme, a neutral 88Sr atom trapped in optical tweezers interacts with a small 88Sr+ ion crystal, and by exciting the atom to a Rydberg state, the atom-ion polarization interaction is strongly enhanced, resulting in a state-dependent modification of the ions' collective motional modes. We show that this shift enables conditional control of a MS gate, allowing the neutral atom to act as a control qubit for an entangling operation between two ions. We investigate the feasibility of the scheme by analyzing Rydberg trapping in the combined optical tweezers and Paul trap potentials, identifying negative-polarizability Rydberg states as particularly favorable for stable confinement. We further evaluate the relevant trapping conditions, Rydberg lifetimes, and coherence requirements, and show that the proposed interface is compatible with realistic experimental parameters. These results establish a practical route toward deterministic atom-ion hybrid quantum gates and quantum interfaces.
Comments22 pages, 11 figures
