Do full-fledged quantum computers already exist, or will it be a decade before they come into being? Will they have to be the size of a football field? A data center cabinet? A microwave oven?
It seems as if the more you talk to computer scientists involved in the quantum computing quest, the less certain the answers become. It’s the flip side of the classic case of Schrödinger’s Cat, which is both dead and alive until you open the box: Quantum computers could be regarded as already alive, or not yet born.
For example, Microsoft is working on a full-stack quantum computer based on an exotic technology that’s expected to come to fruition on the time scale of a decade. Maryland-based IonQ has been making its quantum systems commercially available since 2019, and plans to start building next-gen quantum computers next year at a research and manufacturing facility in Bothell, Wash. Meanwhile, D-Wave Systems, which is headquartered near Vancouver, B.C., has been selling quantum hardware for more than a decade.
So are quantum computers ready for prime time? Researchers say that they’re not, and that the timeline for development is fuzzy. It all depends on how you define quantum computers and the kinds of problems you expect them to handle.
