Diagram of the Current Configuration and Nodes of the Chicago Quantum Network. Credit: Chicago Quantum Exchange

We reported in April that the Chicago Quantum Exchange and Toshiba were building a 35 mile (56 km) quantum link between Argonne National Laboratory and the University of Chicago. They have now completed this link and have added it to the 89 mile (144 km) quantum loop that Argonne had previously installed creating a total network spanning 124 miles (200 km) which is the largest quantum network currently deployed in the United States. This expanded network will have six nodes and including nodes at Argonne in suburban Lemont, Illinois, and the University of Chicago and the Chicago Quantum Exchange headquarters, both on the South side of Chicago. This network will be used as a testbed to research quantum key distribution as well as connecting together remote quantum computers and quantum sensors. This network will serve as the start for a larger network as they make additional expansions. Future expansions could eventually extend to the University of Illinois in Champaign-Urbana, about 120 miles (193 km) distant and other locations. For more details about this network and planned research activities with it, you can view a press release available on the University of Chicago website here.

June 16, 2022