While many companies are now offering access to general-purpose quantum computers, they're not currently being used to solve any real-world problems, as they're held back by issues with qubit count and quality.Unlike with general-purpose quantum computers, it hasn't been mathematically demonstrated that quantum annealers can consistently outperform traditional computers.And a number of companies are now using them to solve real-world problems.Drug searchesOne of the companies that relies on D-Wave's hardware is POLARISqb, which works in the field of drug discovery, identifying potential drug molecules in software for companies to test them in biological systems."We design a virtual large chemical space, and we use a quantum computer to search that chemical space to find the best molecules," POLARISqb founder Shahar Keinan told Ars."