AI 中文总结
该研究展示异质集成薄膜铌酸锂-硅耦合腔调制器，可实现可调双向频率模式变换，还验证材料灵活性，为可扩展集成频率 bin 量子光子电路提供方案。
AI 中文摘要
频率编码的光子量子比特为高维量子信息处理提供了可扩展的路径，但需要能相干混合频率模式的高效组件。耦合腔调制器仅用单个驱动微波音调即可耦合杂化光学超模，具备该功能。本文展示了一种异质集成的薄膜铌酸锂-硅耦合腔调制器，可实现可调双向频率模式变换，包括50/50分束和近完全频率交换，在10 GHz超模分裂下泵浦消光比>20 dB。由于电光薄膜键合在晶圆厂制备的硅光子平台上，该方法可与光子对源、光谱滤波器、有源调谐元件及单光子探测器共集成。本文还将薄膜钽酸锂键合至同一耦合腔平台，证明了该材料灵活性，可用于可扩展的集成频率 bin 量子光子电路。
英文摘要
Frequency encoded photonic qubits promise a scalable path towards high-dimensional quantum information processing, but require efficient components for coherently mixing frequency modes. Coupled cavity modulators provide this functionality by using only a single driving microwave tone to couple hybridized optical supermodes. Here, we demonstrate a heterogeneously integrated thin-film lithium-niobate-on-silicon coupled-cavity modulator that realizes tunable bidirectional frequency mode transformations, including \(50/50\) beam splitting and near complete frequency swapping with \(>20~\mathrm{dB}\) pump extinction at a \(10~\mathrm{GHz}\) supermode splitting. Because the electro-optic film is bonded onto a foundry fabricated silicon photonics platform, the approach is compatible with co-integration of photon pair sources, spectral filters, active tuning elements, and single photon detectors. We also bond thin-film lithium tantalate onto the same coupled-cavity platform, demonstrating material flexibility for scalable integrated frequency bin quantum photonic circuits.
Comments6 pages 5 figures
