单光子芯片上的异质集成压缩光产生与探测
Heterogeneously Integrated Squeezed-Light Generation and Detection on a Single Photonic Chip
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中文总结 AI 辅助
本文通过异质集成技术在单光子芯片上实现压缩光产生、路由与平衡零差探测，测得含34个量子模式的双模压缩量子微梳约3 dB压缩度，建立了全集成压缩光量子光子系统的可扩展架构。
中文摘要 AI 辅助
压缩光是量子增强传感和连续变量量子信息处理的基础，集成光子学为规模化制备压缩光提供了途径。压缩光产生与测量是这些应用的核心环节，量子测量不仅作为读出手段，还是量子态演化中的主动操作。然而，将压缩光产生与光电探测集成在同一块光子芯片上长期以来颇具挑战，因为二者对材料的要求存在根本冲突：需要低光损耗以保持量子关联，同时需要高效的光子吸收用于探测。本文通过异质集成技术，在单块光子芯片上实现了压缩光产生、路由及平衡零差探测。对包含34个量子模式的双模压缩量子微梳进行测量，得到约3 dB的压缩度。本研究为全集成压缩光量子光子系统建立了可扩展架构，在单芯片上实现了量子态产生、处理与探测的统一。
英文摘要
Squeezed light underpins quantum-enhanced sensing and continuous-variable quantum information processing, and integrated photonics offers a route to producing it at scale. Universal to these applications are squeezed-light generation and measurement. Importantly, quantum measurements serve not only as readout but also as active operations in quantum-state evolution. However, integrating squeezed-light generation and photodetection on the same photonic chip has remained challenging because they impose fundamentally conflicting material requirements: low optical loss to preserve quantum correlations, but efficient photon absorption for photodetection. Here, we demonstrate squeezed-light generation, routing, and balanced homodyne detection integrated on a single photonic chip through heterogeneous integration. A two-mode squeezed quantum microcomb comprising 34 quantum modes is measured with approximately 3 dB squeezing. Our work establishes a scalable architecture for fully integrated squeezed-light quantum photonic systems, unifying quantum-state generation, processing, and detection on a single chip.
