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Harvard researchers have engineered a compact light mixer using layered semiconductors and metasurfaces to significantly boost nonlinear optical interactions for near-infrared wavelengths. This advancement enables more efficient photonic circuits, which are critical components for scaling up integrated quantum technologies and high-speed fiber-optic networks. By concentrating light within ultra-thin structures, this device offers a scalable path toward smaller, higher-performance quantum hardware.

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Harvard builds a light mixer for smaller quantum devices

Quantum ZeitgeistSeptember 4, 20263 min read

Harvard engineers built a device combining semiconductors & metasurfaces—a powerful “light mixer” for smaller photonic & quantum devices.

Harvard University researchers are building a new type of optical device using engineered semiconductors and metasurfaces to efficiently mix and transform near-infrared light, an important advancement for fiber-optic networks and potentially smaller quantum technologies. The collaboration between Harvard SEAS, University of Texas Austin, and University of California, Irvine, detailed in Nature Nanotechnology, moves beyond traditional materials like lithium niobate and gallium arsenide…

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