AI 中文总结
研究固态自旋量子比特远程纠缠，结合宽带波导架构与高效光子发射，实现相干控制与高可见度双光子干涉，通过光子介导纠缠生成与实时前馈产生一致纠缠态，确立波导集成锡空位中心为可扩展量子网络节点平台。
AI 中文摘要
固态自旋-光子界面有望通过片上光子集成和复用纠缠生成来扩展量子网络。到目前为止，集成发射器之间的远程纠缠仅在腔增强系统中实现，其中制造良率和光谱匹配仍然是主要障碍。在此，我们展示了嵌入在单独片上波导中的金刚石锡空位自旋量子比特之间的预示远程纠缠。将固有的高效光子发射与宽带波导架构相结合，可提供高器件良率，无需与腔模进行光谱匹配。我们实现了相干光学和自旋控制，并实现了高可见度的双光子干涉。通过将光子介导的纠缠生成与实时前馈相结合，我们产生了与预示模式无关的一致纠缠态。这些结果确立了波导集成的锡空位中心作为可扩展量子网络节点的有吸引力的平台。
英文摘要
Solid-state spin-photon interfaces promise to scale quantum networks through on-chip photonic integration and multiplexed entanglement generation. To date, remote entanglement between integrated emitters has been realized only in cavity-enhanced systems, where fabrication yield and spectral matching remain major obstacles. Here we demonstrate heralded remote entanglement between diamond tin-vacancy spin qubits embedded in separate on-chip waveguides. Combining intrinsically efficient photon emission with a broadband waveguide architecture provides high device yield and obviates the need for spectral matching to cavity modes. We realize coherent optical and spin control and achieve high-visibility two-photon interference. By combining photon-mediated entanglement generation with real-time feedforward, we produce a consistent entangled state independent of the heralding pattern. These results establish waveguide-integrated tin-vacancy centers as a compelling platform for scalable quantum network nodes.
