Ground networks can only transmit quantum information over relatively short distances, making them insufficient for global connections. Satellites offer a promising solution for achieving worldwide reach, but the design of a comprehensive global quantum internet is still missing.
The Netherlands Organization (TNO) for Applied Scientific Research has initiated a new project called Qu-STAR, aimed at utilizing space to extend the quantum internet globally. This initiative addresses a critical challenge in the development of a global quantum internet: overcoming distance limitations in quantum information exchange. Current ground-based quantum networks face significant constraints, with information exchange limited to a few hundred kilometers. Qu-STAR explores the potential of satellites to extend this reach, potentially enabling worldwide quantum connectivity.
TNO is partnering with Airbus Central Research and Technology, leveraging their combined expertise in quantum technology, free-space optics, and satellite communications. The project aims to design a comprehensive framework for a global quantum internet, integrating both ground and space-based elements. Qu-STAR builds on existing knowledge in ground-satellite optical and quantum communication links, pushing the boundaries of current technological capabilities.
While quantum computing holds immense potential for solving complex problems, realizing its full power requires a network capable of linking quantum devices globally. Qu-STAR represents a step towards this goal, exploring how space-based solutions can overcome the limitations of terrestrial networks. TNO is inviting other partners to join Qu-STAR to work on the future of secure global quantum communications. As the project progresses, it is expected to address additional challenges, such as quantum entanglement swapping in space.