Government officials around the world worry about the arrival of a useful quantum computer, often referred to as cryptanalytically relevant because of its value in breaking encryption. Such a computer could bypass the security of sensitive systems and make digital defenses for everything from state secrets to financial transactions totally worthless.
“A quantum computer has the potential to significantly cut world energy consumption, make energy storage more efficient and expedite drug discovery,” Mr. Herrera said. “It also has the potential to wreck the world economy and place government networks at risk. In the worst-case scenario, a quantum computer could be an economic weapon of mass destruction.”