Quantum computing isn't some far-fetched technology that seems like it belongs in a sci-fi movie. It's real technology that's already being used in some industries with success, and widespread quantum computing isn't that much farther in the future. This makes it vital for investors to position their portfolio for success now, as the hype behind quantum computing could cause a handful of these stocks to skyrocket once the market wakes up to the potential of its widespread usage. If I were starting my portfolio over, I'd scoop up these five quantum computing stocks today. While this investment portfolio is quantum-focused, I think it has what it takes to outperform the market over the long haul as well. Pure plays: IonQ and D-Wave Quantum Both IonQ (IONQ +2.69%) and D-Wave Quantum (QBTS +1.68%) are popular quantum computing investments. They are pure plays, so they have only one goal: to create a viable quantum computer that is widely used. If they fail at this task, their stocks will head to $0. Fortunately for their shareholders, these two are already seeing success and are on a solid pathway to becoming much larger companies. NYSE: IONQ Key Data Points IonQ owns the world record for the most accurate quantum computer. This is a huge deal because quantum computers' high error rates are one of the primary issues that must be fully addressed before they will be suitable for widespread usage. The other is scale: Quantum computers need to operate with a lot of qubits to handle the types of complicated computations that are expected to provide the bulk of their use cases. IonQ recently announced a new plan detailing how it can scale its technology up to a 10,000-qubit quantum computer. This would be a major breakthrough and establish it as a top competitor