There were two announcements this week of Quantum Key Distribution (QKD) networks being built in the London and Chicago metropolitan areas. The first is a partnership between Toshiba and the Chicago Quantum Exchange (CQE) to install a 38 mile (61 km) link from the University of Chicago to the Argonne National Laboratory in suburban Chicago. The link will us Toshiba’s multiplexed QKD technology and is intended to become a part of a multi-node quantum network being established in the United States. The link will initially be used for testing, research, and facilitating collaboration between quantum researchers while also training a future quantum workforce.

The London announcement was made by BT (formerly British Telecom) and Toshiba announcing the launch of the first commercial trial of QKD services. The first customer will be EY (Ernst & Young) and will connect two of its London sites in Canary Wharf, and near London Bridge. This network will provide high bandwidth end-to-end encrypted links between the two locations. The network has been in operation since early April and was formally announced earlier this week. The network utilizes standard fiber optic cable, and the companies hope to expand the network to service multiple commercial customers in the future.

Additional information about the Chicago network is available in a news release posted on the Chicago Quantum Exchange website here and more information about the London network can be seen in another news release on the Toshiba website here.

April 30, 2022