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Hamiltonian-Oriented Homotopy QAOA

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arxiv 2301.13170 v1 pith:7QMKKQJ5 submitted 2023-01-30 quant-ph

Hamiltonian-Oriented Homotopy QAOA

classification quant-ph
keywords qaoahomotopyoptimizationenergyhoho-qaoalandscapeclassicalhamiltonian-oriented
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The classical homotopy optimization approach has the potential to deal with highly nonlinear landscape, such as the energy landscape of QAOA problems. Following this motivation, we introduce Hamiltonian-Oriented Homotopy QAOA (HOHo-QAOA), that is a heuristic method for combinatorial optimization using QAOA, based on classical homotopy optimization. The method consists of a homotopy map that produces an optimization problem for each value of interpolating parameter. Therefore, HOHo-QAOA decomposes the optimization of QAOA into several loops, each using a mixture of the mixer and the objective Hamiltonian for cost function evaluation. Furthermore, we conclude that the HOHo-QAOA improves the search for low energy states in the nonlinear energy landscape and outperforms other variants of QAOA.

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