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Domain-Driven Modeling of Combinatorial Constraint Satisfaction Problems for Quantum Solvers

Marc Uphues, Sebastian Thöne, Herbert Kuchen

Published Jan 1, 2026• 0 citations
Publisher

Abstract

Over the last years, quantum computing has reached a level of technological maturity that enables the exploration of potential applications. One use case is solving combinatorial Constraint Satisfaction Problems. Yet, it seems challenging to utilize quantum computing for such problems in practice, as software developers must translate these problems to specialized models required by quantum solvers. A common candidate is the model of Quadratic Unconstrained Binary Optimization. It serves as an input format for both quantum annealing and gate-based quantum algorithms. With this paper, we present a software-based and domain-driven modeling approach that is compatible with such quantum solvers. It facilitates the inline-declaration of problems within domain model code through an annotation-based syntax. Our novel approach is driven by a framework-like engine that encapsulates and automates the process of problem instantiation, translation, solver invocation, and solution mapping. It ena bles software developers and domain experts to solely focus on the problem domain, rather than highly specialized models prescribed by quantum solvers. By incorporating principles of Domain-Driven Design, our approach employs a well-known modeling technique.

DOI
10.25974/fhms-20395

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This paper investigates the application of quantum annealing to Constraint Satisfaction Problems (CSPs) that incorporate temporal constraints. Traditional quantum annealing approaches often falter when dealing with these more complex scenarios. We propose an adaptive strategy that reformulates the CSP into a Quadratic Unconstrained Binary Optimization (QUBO) problem, strategically incorporating operators designed to explicitly represent and enforce temporal dependencies. Our approach aims to enhance the algorithm's ability to navigate problems where solutions are not just determined by logical constraints but also by their timing. The core of our methodology lies in translating the temporal logic directly into the quantum annealing framework, allowing for a more nuanced and effective exploration of the solution space. We demonstrate the potential of this method through a theoretical analysis and formulation, focusing on the key elements required for successful implementation within a quantum annealing system. This work represents a direct response to the limitations of current quantum annealing techniques and offers a novel pathway for tackling temporally constrained CSPs.
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This paper explores a novel approach to solving constraint satisfaction problems (CSPs) by leveraging principles inspired by quantum computing, specifically utilizing superconducting qubits. The core idea is to map the CSP's variables and constraints onto the state space of these qubits, then simulate a quantum annealing process through controlled decoherence and interference. Unlike traditional CSP solvers, this method aims to exploit the potential for rapid convergence by mimicking the superposition and entanglement characteristics inherent in quantum systems. The implementation described here is entirely classical, avoiding the need for specialized quantum hardware. We demonstrate a framework for translating CSP problems into a qubit-based representation and outlining the algorithmic steps for a 'quantum-inspired' annealing process. This approach offers a potentially scalable solution for complex CSPs, bridging the gap between classical computation and the theoretical advantages of quantum computation. The presented method focuses on achieving efficient exploration of the solution space through carefully designed control of qubit decoherence and interference, ultimately leading to near-optimal solutions. The key contribution lies in the practical realization of quantum-inspired algorithms using accessible, controllable superconducting qubits.