BOTHELL, Wash. — IonQ’s quantum computer factory is still ramping up to full operation, but the company is already expanding its footprint by tens of thousands of square feet. A year ago, when IonQ revealed its plans to create a new kind of research and manufacturing facility in the Seattle area, the idea was to use roughly 65,000 square feet of space on two floors of a three-story building in Bothell that once housed offices for AT&T Wireless. “We’re happy to announce today we’ve taken the thir