A University of Tokyo spinoff and NTT are collaborating on a project. They plan to market an optical quantum computer.
Details of this effort are limited, but more information can be found through asahi.com. The involvement of a major entity like NTT and a prestigious institution like the University of Tokyo suggests a significant undertaking.
Further specifics about the optical quantum computer and the marketing plans are not provided, but interested parties can consult the source for additional details.