Quantum computing is still a very new field, and no one is really sure if there will be a major breakthrough that makes it the "new big thing" or if it will be a niche field with interesting but limited applications.
If you are looking to work strictly in Quantum, you'll find most opportunities in academia, government/defense/intelligence community, or large data computing firms like IBM. These will be primarily research type roles, to search for a breakthrough application or use for the technology.
If you're looking to actually design, build, and market quantum computers (rather than just to research them) you'll find that there are a very small number of commercial companies that are currently working on engineering, producing, and marketing them at present. But there's not a large demand for quantum computer experts, because there's not a large market for them at present.
If you're looking to hedge your bet for the future, in the event quantum takes off, then make sure you also study plenty of traditional data, business intelligence, and other non-quantum computing topics so that you also have a general knowledge in computing, so you can more easily find a job.