Prospects for quantum advantage in machine learning from the representability of functions

Fuente: arXiv
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Autores principales: Masot-Llima, Sergi, Gil-Fuster, Elies, Bravo-Prieto, Carlos, Eisert, Jens, Guaita, Tommaso
Formato: Preprint
Publicado: 2025
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author Masot-Llima, Sergi
Gil-Fuster, Elies
Bravo-Prieto, Carlos
Eisert, Jens
Guaita, Tommaso
author_facet Masot-Llima, Sergi
Gil-Fuster, Elies
Bravo-Prieto, Carlos
Eisert, Jens
Guaita, Tommaso
contents Demonstrating quantum advantage in machine learning tasks requires navigating a complex landscape of proposed models and algorithms. To bring clarity to this search, we introduce a framework that connects the structure of parametrized quantum circuits to the mathematical nature of the functions they can actually learn. Within this framework, we show how fundamental properties, like circuit depth and non-Clifford gate count, directly determine whether a model's output leads to efficient classical simulation or surrogation. We argue that this analysis uncovers common pathways to dequantization that underlie many existing simulation methods. More importantly, it reveals critical distinctions between models that are fully simulatable, those whose function space is classically tractable, and those that remain robustly quantum. This perspective provides a conceptual map of this landscape, clarifying how different models relate to classical simulability and pointing to where opportunities for quantum advantage may lie.
format Preprint
id arxiv_https___arxiv_org_abs_2512_15661
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Prospects for quantum advantage in machine learning from the representability of functions
Masot-Llima, Sergi
Gil-Fuster, Elies
Bravo-Prieto, Carlos
Eisert, Jens
Guaita, Tommaso
Quantum Physics
Machine Learning
Demonstrating quantum advantage in machine learning tasks requires navigating a complex landscape of proposed models and algorithms. To bring clarity to this search, we introduce a framework that connects the structure of parametrized quantum circuits to the mathematical nature of the functions they can actually learn. Within this framework, we show how fundamental properties, like circuit depth and non-Clifford gate count, directly determine whether a model's output leads to efficient classical simulation or surrogation. We argue that this analysis uncovers common pathways to dequantization that underlie many existing simulation methods. More importantly, it reveals critical distinctions between models that are fully simulatable, those whose function space is classically tractable, and those that remain robustly quantum. This perspective provides a conceptual map of this landscape, clarifying how different models relate to classical simulability and pointing to where opportunities for quantum advantage may lie.
title Prospects for quantum advantage in machine learning from the representability of functions
topic Quantum Physics
Machine Learning
url https://arxiv.org/abs/2512.15661