QML combines quantum computing and machine learning to efficiently solve complex problems. This survey reviews QML's fundamentals, key models, and enabling technologies, focusing on data encoding, quantum algorithms, and the integration of large language models (LLMs). We highlight LLMs' potential to optimize algorithms, address challenges like barren plateaus, and improve interpretability. Advances in quantum hardware and software bridging theory and practice are discussed, alongside quantum feature encoding methods critical for high-dimensional data. Key QML models demonstrating quantum speedups in fields such as finance, healthcare, and logistics are examined. Despite its promise, QML faces challenges including noise, limited hardware scalability, and encoding complexity, necessitating progress in error correction, hardware, and hybrid algorithms.
QML combines quantum computing and machine learning to efficiently solve complex problems. This survey reviews QML's fundamentals, key models, and enabling technologies, focusing on data encoding, quantum algorithms, and the integration of large language models (LLMs). We highlight LLMs' potential to optimize algorithms, address challenges like barren plateaus, and improve interpretability. Advances in quantum hardware and software bridging theory and practice are discussed, alongside quantum feature encoding methods critical for high-dimensional data. Key QML models demonstrating quantum speedups in fields such as finance, healthcare, and logistics are examined. Despite its promise, QML faces challenges including noise, limited hardware scalability, and encoding complexity, necessitating progress in error correction, hardware, and hybrid algorithms.
This study presents a comprehensive survey on Quantum Machine Learning (QML) along with its current status, challenges, and perspectives. QML combines quantum computing and machine learning to solve complex problems in different domains, leveraging quantum algorithms to enhance classical machine learning techniques. We explore the application of QML in various domains such as cybersecurity, finance, healthcare, and drug discovery. The survey includes detailed tabular comparisons of the different QML models used for each application area, highlighting key techniques, findings, and their limitations. In this work, we identify important trends such as the strong potential of hybrid quantum-classical models for near-term applications and the significant challenges in the quantum domain due to quantum noise, limited qubit scalability, and costly qRAM implementations. Furthermore, we discuss solutions that emphasize advances in hardware, quantum error correction, and algorithmic innovations to address these challenges. By providing an in-depth analysis of QML’s potential across different fields, this study provides valuable insights into how QML can address complex real-world challenges and transform traditional machine learning practices.
Quantum Machine Learning (QML) is the emerging confluence of quantum computing and artificial intelligence that promises to solve computational problems inaccessible to classical systems. Using quantum principles such as superposition, entanglement, and interference, QML promises exponential speed-ups and new paradigms for data processing in machine learning tasks. This review gives an overview of QML, from advancements in quantum-enhanced classical ML to native quantum algorithms and hybrid quantum-classical frameworks. It varies from applications in optimization, drug discovery, and quantum-secured communications, showcasing how QML can change healthcare, finance, and logistics industries. Even though this approach holds so much promise, significant challenges remain to be addressed-noisy qubits, error correction, and limitations in data encoding-that must be overcome by interdisciplinary research soon. The paper tries to collate the state of the art of QML in theoretical underpinnings, practical applications, and directions into the future.
Quantum Machine Learning represents a paradigm shift at the intersection of Quantum Computing and Machine Learning, leveraging quantum phenomena such as superposition, entanglement, and quantum parallelism to address the limitations of classical approaches in processing high-dimensional and large-scale datasets. This survey provides a comprehensive analysis of Quantum Machine Learning, detailing foundational concepts, algorithmic advancements, and their applications across domains such as healthcare, finance, and quantum chemistry. Key techniques, including Quantum Support Vector Machine, Quantum Neural Network, Quantum Decision Trees, and hybrid quantum-classical models, are explored with a focus on their theoretical foundations, computational benefits, and comparative performance against classical counterparts. While the potential for exponential speedups and enhanced efficiency is evident, the field faces significant challenges, including hardware constraints, noise, and limited qubit coherence in the current era of Noisy Intermediate-Scale Quantum devices. Emerging solutions, such as error mitigation techniques, hybrid frameworks, and advancements in quantum hardware, are discussed as critical enablers for scalable and fault-tolerant Quantum Machine Learning systems. By synthesizing state-of-the-art developments and identifying research gaps, this survey aims to provide a foundational resource for advancing Quantum Machine Learning toward practical, real-world applications in tackling computationally intensive problems.
Quantum Machine Learning (QML) has emerged as a promising interdisciplinary field that combines quantum computing with machine learning to address complex computational problems. This survey provides a comprehensive overview of the theoretical foundations, unified taxonomy, and key methodologies in QML. We discuss quantum data encoding techniques, variational quantum models, neural-inspired quantum architectures, and quantum data learning approaches, along with their associated challenges and limitations. The survey further examines evaluation strategies, the concept of quantum advantage, and the role of current quantum hardware and software platforms in advancing QML research. In addition, major application domains and the growing importance of trustworthy QML, including interpretability, robustness, and security, are explored. Finally, we highlight open challenges and future research directions to provide insights into the evolving landscape of Quantum Machine Learning.
Quantum Machine Learning (QML) is an emerging interdisciplinary field that combines the principles of quantum computing and artificial intelligence (AI) to overcome the limitations of classical machine learning algorithms.This paper explores the foundational principles of quantum computing and their application in enhancing machine learning algorithms.The researcher discuss the potential of quantum speedup, new possibilities in data classification and optimization, and hardware and algorithm development challenges.The paper also highlights the interdisciplinary applications of QML in financial modeling, logistics, supply chain optimization, and drug discovery.Through qualitative and quantitative analysis, we provide insights into the current state of QML, limitations, and future research directions.Quantum computing, with its ability to process information in fundamentally new ways, offers a paradigm shift in computational power.By leveraging quantum mechanical phenomena such as superposition, entanglement, and interference, QML aims to solve problems that are currently intractable for classical computers.This paper delves into the theoretical underpinnings of QML, examining how quantum algorithms can be integrated with classical machine learning techniques to achieve superior performance.The researcher also explore the practical implications of QML in various industries, emphasizing its potential to revolutionize fields such as finance, logistics, and healthcare.Despite the promising advancements, significant challenges remain, including the development of robust quantum hardware and the creation of scalable quantum algorithms.This paper provides a comprehensive overview of the current state of QML, identifies key research gaps, and outlines future directions for this rapidly evolving field.
As the limits of classical machine learning (ML) become increasingly evident—especially in terms of computational scalability and data processing—quantum computing emerges as a promising frontier capable of addressing these challenges. Quantum Machine Learning (QML) represents the intersection of quantum computing and traditional ML, aiming to leverage quantum phenomena such as superposition, entanglement, and quantum parallelism to enhance learning capabilities, accelerate training, and solve complex problems that are intractable for classical algorithms. This paper provides a comprehensive overview of the evolving field of QML, beginning with the theoretical foundations of quantum computing and its synergy with classical machine learning principles. We explore key QML algorithms, including quantum support vector machines (QSVM), variational quantum classifiers (VQC), quantum neural networks (QNN), and hybrid quantum-classical approaches that exemplify the practical integration of both paradigms. We further examine real-world applications of QML across domains such as drug discovery, finance, climate modeling, and optimization, where quantum enhancements have begun to show early but promising results. Despite its theoretical potential, QML faces substantial limitations, including quantum hardware instability, limited qubit scalability, noise sensitivity, and unresolved challenges in quantum data encoding and interpretability. In synthesizing recent advancements and persistent obstacles, this paper highlights the importance of continued interdisciplinary research, algorithmic refinement, and hardware evolution. We also outline future directions that could lead QML from experimental promise to practical utility, including developments in quantum error correction, benchmarking standards, and application-specific quantum architectures