Wall Street’s spotlight is turning toward quantum computing, and one name is capturing outsized attention. Most recently, Mizuho Securities just kicked off coverage of IonQ (IONQ) with a Barron's “Outperform” rating and a $90 price target, a projection that implies 95.65%  upside from current trading levels. Quantum computing promises to be the next major leap in high-performance computing, to solve complex problems that are intractable for classical machines. Investors see this as a transformative techn ...