Decoupling between the United States and China accelerated in late November as both countries adopted new trade restrictions against the other. On Nov. 24, the U.S. Commerce Department announced export controls on eight Chinese quantum computing companies. A week prior, Bloomberg reported on new import controls created by a quasi-governmental Chinese industry panel known as the “Xinchuang committee,” which effectively blacklists technology companies that are more than 25 percent foreign-owned from supplying sensitive industries. In a press release, the Commerce Department stated that it added the eight Chinese quantum computing companies to the Entity List in an effort to “prevent...