A future quantum internet would tap the properties of quantum physics to ​“teleport”quantum information across long distances. It would also be virtually unhackable. Argonne is a crucial hub in a developing network that connects various research institutions in the Chicago metro and surrounding region. The development of quantum networks is also motivated by new applications, such as exquisitely accurate clock synchronization or secure communication. 

Argonne aims to enable scalable, long-distance quantum communication. The laboratory’s work on quantum communication in a metropolitan-scale, fiber-optic test bed showcases many of the technologies that will help lay the foundation for a quantum internet. For example, quantum memories will enable realization of fully functional repeater nodes that will securely relay quantum signals through the quantum network. Experiments are complemented by quantum network architecture research and simulations that seek optimal placement of components, desired functionality of hardware, and specification of control protocols to enable quantum communication at the intercontinental scale.