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This breakthrough integrates squeezed light generation, routing, and detection onto a single silicon nitride chip, resolving previous material conflicts that limited quantum photonics scalability. Achieving 3 dB of squeezing across 34 modes demonstrates significant progress toward fully integrated architectures essential for advanced quantum sensing and information processing. While long-term stability remains to be tested, this heterogeneous integration approach marks a pivotal step in practicalizing large-scale quantum photonic systems.

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Virginia Team Measures 3dB Squeezing on a Photonic Chip

Quantum ZeitgeistAugust 17, 20264 min read

Conflicting material demands previously forced separation of squeezed-light creation and measurement. Now, a single photonic chip simultaneously generates, routes and detects squeezed light, achieving 3 dB of squeezing across 34 quantum modes. This unification establishes a scalable architecture for fully integrated quantum photonic systems.

Integrating the generation and measurement of squeezed light onto a single photonic chip previously presented a key challenge due to conflicting material requirements. Haoran Chen of the University of Virginia and colleagues have, for the first time, fully integrated squeezed light generation, routing, and balanced homodyne detection on a single chip using heterogeneous integration. This novel chip design overcomes a longstanding obstacle in quantum photonics by combining light generation and detection. Squeezed light,…

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