12.2 Applications and strategy

What do we mean by a ‘‘quantum application’’? It’s not software where the only computer used is a quantum one. That is not possible today, nor will it be necessary or possible for many decades, or even centuries. Rather, a quantum application is a hybrid classical-quantum solution that use both kinds of hardware and software.

Industry use cases, as I touched upon briefly in chapter 1

Together with those in the other sections, these questions will help you think about use cases for quantum computing and your plan for matching them to quantum solutions:

• Where is your classical computing taking too long?
• Where is your classical computing too inaccurate?
• Do you currently use HPC, High Performance Computing?
• If so, what are the bottlenecks in your solutions?
• Can you pinpoint areas where there is an exponential growth of necessary memory or computation time?
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