Storing quantum information is essential for the future of both quantum computing and a global quantum internet. Today's quantum communication systems struggle with signal loss over long distances, which limits how far quantum information can travel. Quantum memories help solve this problem by making quantum repeaters possible, allowing information to hop across a network through entanglement swapping rather than fading away.
A new study published in Light: Science & Applications reports a major advance in this area. Researchers from the Humboldt-Universität zu Berlin, the Leibniz Institute of Photonic Technology, and the University of Stuttgart have introduced a new type of quantum memory built from 3D-nanoprinted structures known as "light cages" filled with atomic vapor. By bringing both light and atoms together on a single chip, the team has created a platform designed for scalability and seamless integration into quantum photonic systems.
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