使用双光子谐振器集成光子-存储器纠缠生成
Integrated Dual-Resonator Architecture for Telecom Photon-Memory Entanglement
AI总结：
通过集成双碳化硅微环谐振器，实现了电信波段光子与量子存储器之间的纠缠生成，无需光谱调整，验证了88.1%的可见度，并展示了高达63个时间模式的高维纠缠。
AI中文摘要：
可扩展量子网络需要光子量子比特与量子存储器之间纠缠的高效生成、存储和同步。基于吸收性稀土离子光子存储器的量子中继器架构为实现高度复用量子网络提供了有希望的途径，但在共同平台上集成光谱匹配的光子源和量子存储器仍然是一个重大挑战。在这里，我们展示了一种基于双碳化硅微环谐振器的集成光子架构，用于电信光子-存储器纠缠生成。一个谐振器作为纠缠光子对源，另一个作为腔增强原子频率梳量子存储器。存储器谐振器实现了1.9的系综协同性，并且与光子源内在光谱匹配，使得无需光谱修改即可存储纠缠的电信光子。我们生成并验证了光子-存储器纠缠，单对干涉可见度为88.1 ± 10.6%。通过利用存储器的多模容量，我们展示了跨越多达63个时间模式的高维光子-存储器qudit纠缠，导致每个检测光子的最大光子信息效率为5.1 Ebits，以及峰值片上光子-存储器纠缠率为5.6 kEbits s$^{-1}$。这些结果建立了第一个用于光子-存储器纠缠生成的集成平台，并为芯片级量子中继器和基于存储器的量子网络在电信基础设施上运行提供了可扩展的途径。
英文摘要：
Scalable quantum networks require the efficient generation and storage of entanglement between photonic qubits and quantum memories. Quantum repeaters based on absorptive rare-earth-ion photonic memories offer a promising route toward highly multiplexed quantum networking, but unifying spectrally matched photon sources and quantum memories within a common architecture remains a major challenge. Here we demonstrate an integrated photonic architecture for telecom photon-memory entanglement generation based on dual self-similar silicon carbide microring resonators. Connected by a fiber link, one resonator operates as an entangled photon-pair source, while the other functions as a cavity-enhanced atomic-frequency-comb quantum memory. The memory resonator reaches an ensemble cooperativity of 1.9 after hyperfine initialization and is spectrally matched to the source, enabling storage of entangled telecom photons without spectral modification. We generate and characterize photon-memory entanglement from a quantum interference visibility preserved before and after storage. Harnessing the strong source correlations and the high multimode capacity of the memory, we access high-dimensional entanglement spanning 63 temporal modes, reaching a maximum photon information efficiency of 5.1 Ebits per detected photon and a peak on-chip photon-memory entanglement rate of 5.6 kEbits per second. These results establish a route toward chip-scale quantum networking hardware operating over telecommunications infrastructure.
