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arXiv · 2608.13218

Heterogeneously Integrated Squeezed-Light Generation and Detection on a Single Photonic Chip

Haoran Chen·Benjamin Westcott·Fatemehsadat Tabatabaei·Xiangwen Guo·Shuman Sun·Zijiao Yang·Gedalia Y. Koehler·Beichen Wang·Shadrach Sarpong·Steven Bowers·Olivier Pfister·Andreas Beling·Xu Yi
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Abstract

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.

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Haoran Chen, Benjamin Westcott, Fatemehsadat Tabatabaei, Xiangwen Guo, Shuman Sun, Zijiao Yang, Gedalia Y. Koehler, Beichen Wang, Shadrach Sarpong, Steven Bowers, Olivier Pfister, Andreas Beling, Xu Yi. 2026-08-13. Heterogeneously Integrated Squeezed-Light Generation and Detection on a Single Photonic Chip. https://arxiv.org/abs/2608.13218

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