Ultra-thin metasurface can generate and direct quantum entanglement

Researchers developed an ultra-thin metasurface capable of generating and directing quantum entanglement, a breakthrough for quantum networking. The device manipulates light at the quantum level, enabling precise control over entangled photon pairs. This advancement accelerates progress toward a quantum internet, where distant nodes share entangled particles for secure communication and distributed quantum computing. The metasurface’s compact design could replace bulky optical setups. Published in February 2026, the study demonstrates the first on-chip solution for scalable entanglement distribution. Traditional methods rely on large, inefficient systems with limited integration potential. The metasurface operates at room temperature, reducing infrastructure demands compared to cryogenic quantum devices. This lowers barriers for real-world deployment in telecom and data networks. By combining nanophotonics and quantum optics, the technology paves the way for high-speed, long-distance entanglement links—critical for next-gen encryption, sensing, and quantum cloud computing.