IonQ's unique approach may allow it to achieve first-mover advantage.Quantum computing is starting to become a more popular investment space, although the technology is still being proven out. However, by 2030, it's expected by some observers to be commercially viable -- opening the door for quantum computing companies to emerge as the top growth stocks in the market.I think that IonQ (IONQ 5.63%) will be among the best in this young industry. IonQ has a few key advantages that may work in its favor, making ...