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Two-Step QAOA: Enhancing Quantum Optimization by Decomposing K-hot Constraints in QUBO Formulations

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arxiv 2408.05383 v2 pith:IETWVITJ submitted 2024-08-09 quant-ph

Two-Step QAOA: Enhancing Quantum Optimization by Decomposing K-hot Constraints in QUBO Formulations

classification quant-ph
keywords optimizationqaoaconstraintsproblemsquantumdecomposingformulationsk-hot
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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The Quantum Approximate Optimization Algorithm (QAOA) has shown promise in solving combinatorial optimization problems by leveraging quantum computational power. We propose a simple approach, the Two-Step QAOA, which aims to improve the effectiveness of QAOA by decomposing problems with k-hot encoding QUBO (Quadratic Unconstrained Binary Optimization) formulations. By identifying and separating the problem into two stages, we transform soft constraints into hard constraints, simplifying the generation of initial conditions and enabling more efficient optimization. The method is particularly beneficial for tackling complex societal problems that often involve intricate constraint structures.

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Cited by 3 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. Decomposition-Based QAOA for Maximum Coverage Location Problem in Satellite Constellation Design

    quant-ph 2026-07 conditional novelty 6.0

    Decomposition-based QAOA with spectral graph cuts and GSR merging solves large satellite MCLP instances with competitive coverage and bounded qubit use where standard QAOA is infeasible.

  2. Towards High Performance Quantum Computing (HPQ): Parallelisation of the Hamiltonian Auto Decomposition Optimisation Framework (HADOF)

    quant-ph 2026-04 unverdicted novelty 4.0

    Parallel HADOF execution on up to four IBM QPUs achieves 3-4x wall-clock speedup for combinatorial QUBO problems versus sequential runs, with comparable quality and validation on genome assembly instances.

  3. QTIS: A QAOA-Based Quantum Time Interval Scheduler

    quant-ph 2025-11 conditional novelty 4.0

    QTIS-QAOA separates the objective and overlap-penalty parts of the scheduling Hamiltonian with distinct QAOA angles, yielding a small measured improvement on toy instances.