Constraint-oriented biased quantum search for linear constrained combinatorial optimization problems

In this paper, we extend a previously presented Grover-based heuristic to tackle general combinatorial optimization problems with linear constraints. We further describe the introduced method as a framework that enables performance improvements through circuit optimization and machine learning techniques. Comparisons with state-of-the-art classical solvers further demonstrate the algorithm’s potential to achieve a quantum advantage in terms of speed, given appropriate quantum hardware.