Multiple Query Optimization Using a Gate-Based Quantum Computer by Tobias Fankhauser, Marc E. Soler, Rudolf Marcel Fuchslin, Kurt Stockinger

“…However, it requires fault-tolerant quantum computers with millions of qubits; a technological challenge still not mastered by engineers. To lower the barrier, hybrid algorithms combining classical and quantum computers are used, where quantum computing is only used for those parts of computation that cannot be solved efficiently otherwise. …”
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