20 quantum computing companies making mind-blowing breakthroughs

Consider, for example, that the temperature of most quantum processing chips must be kept as close to absolute zero (roughly -460 degrees Fahrenheit) as possible. Or that some physicists think quantum computing is "the first technology that allows useful tasks to be performed in collaboration between parallel universes." Or that a quantum computer recently "made history go backward." True, it was only a simulation, but still -- brain blowing stuff. Before we get carried away, though, let's consider the foundational basics. Classical computers operate using binary bits, storing data and running processes using ones and zeroes.