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Scientists from the U.S. Department of Energy’s (DOE) Argonne National Laboratory and the University of Chicago (UChicago) have launched a quantum loop, consisting of two connected, 26-mile fiber optic cables that run between Argonne and the Illinois tollway near Bolingbrook, Ill., and back. At 52 miles, it is one of the longest ground-based quantum communication channels in the country, the team said.
The loop will serve as a testbed for researching the use of quantum physics to send unhackable information across long distances and will help scientists identify and address the challenges of operating a quantum network. Researchers at Argonne and UChicago will also use the testbed to explore quantum entanglement.