Application of Grover’s Algorithm in Route Optimization
В. А. Богатырев, V. S. Moskvin · 2023
Route determination and optimization is a persistent challenge in transportation networks due to combinatorial explosion of options, dynamically changing conditions, competing optimization criteria, and complexity of real-world systems. Classical algorithms struggle to efficiently solve route optimization at scale due to exponential growth of possibilities, NP-hardness, limitations of dynamic programming approaches, and inability to leverage quantum parallelism. This paper explores the potential application of Grover’s algorithm in optimizing road transportation. Grover’s quantum algorithm offers a potential solution by using an oracle function to recognize optimal routes based on constraints and objectives encoded in a quantum state representing all possible paths. Constructive interference and amplitude amplification drive the system toward optimal solutions. By utilizing Grover’s algorithm, road transportation networks can benefit from improved route planning, traffic management, and resource allocation, ultimately enhancing efficiency and reducing congestion. The transportation network must be efficiently encoded into a quantum representation. An optimization oracle tailored to routing objectives then recognizes optimal solutions, which are amplified via a diffusion operator utilizing interference. Repeated application concentrates amplitude in optimal routes, which can be measured. Key challenges include encoding the network effectively within qubit resource constraints, designing an oracle to evaluate routes based on real-world conditions and optimization criteria, and translating the optimized quantum state into actionable routing guidance. If these challenges can be met, Grover’s algorithm may enable route optimization at a scale intractable for classical techniques.