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J-STAR: Journal of Social & Technological Advanced Research

Quantum Computing: Algorithms and Applications

Sara Syed

Published Sep 16, 2025• 0 citations
OpenAlex

Abstract

Quantum computing is a modern new paradigm of computation similarly exploiting the standards of quantum mechanics like superposition, entanglement and quantum interference to finish computations a good way to be unfathomable for classical computers. This paper follows the trails to the theoretical foundations of quantum computing and offers with a few essential algorithms for quantum computing like Shor's set of rules for factorization, Grover's set of rules for search, Quantum Fourier Transform and Quantum Approximate Optimization Algorithm (QAOA). This paper specializes in how complicated the computation is, mathematical ideas underlying such algorithms and their feasible makes use of in cryptography, optimization and simulation in quantum. By sifting thru the interaction among quantum mechanics and algorithmic design, this paintings offers a few perception into the mechanisms that permit for quantum speedup, the cutting-edge obstacles due to hardware obstacles and mistakess charges and what may be carried out withinside the destiny each theoretically and empirically.

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Quantum computing is a modern new paradigm of computation similarly exploiting the standards of quantum mechanics like superposition, entanglement and quantum interference to finish computations a good way to be unfathomable for classical computers. This paper follows the trails to the theoretical foundations of quantum computing and offers with a few essential algorithms for quantum computing like Shor's set of rules for factorization, Grover's set of rules for search, Quantum Fourier Transform and Quantum Approximate Optimization Algorithm (QAOA). This paper specializes in how complicated the computation is, mathematical ideas underlying such algorithms and their feasible makes use of in cryptography, optimization and simulation in quantum. By sifting thru the interaction among quantum mechanics and algorithmic design, this paintings offers a few perception into the mechanisms that permit for quantum speedup, the cutting-edge obstacles due to hardware obstacles and mistakess charges and what may be carried out withinside the destiny each theoretically and empirically.
For decades, classical computers have been governed by predictable rules. But as we approach the physical limits of computation, a new paradigm is emerging. Quantum computing operates on the strange and powerful laws of quantum mechanics—superposition, entanglement, and interference—to tackle problems far beyond the reach of any classical machine. The true potential of this field was unlocked by two landmark discoveries: Shor’s algorithm, a revolutionary method for integer factorization that threatens to upend modern cryptography, and Grover’s algorithm, a versatile tool that offers a quadratic speedup for unstructured search problems. This paper serves as a guide to these foundational algorithms, detailing their inner workings and their profound impact. We also explore post-quantum cryptography, hybrid frameworks, and quantum machine learning—illustrating the evolving role of quantum algorithms in shaping the future of science and technology.
Quantum computing (QC) presents transformative potential for solving complex scientific problems that remain intractable for classical computers. Leveraging quantum superposition, entanglement, and interference, quantum algorithms such as Shor’s factoring algorithm, Grover’s search algorithm, variational quantum eigensolvers (VQE), and quantum approximate optimization algorithms (QAOA) enable exponential or polynomial speedups for selected problem classes. This paper explores recent advancements in quantum computing algorithms, their practical implementations, and emerging applications in fields such as molecular simulations, material science, cryptography, optimization, and machine learning. We highlight the strengths and limitations of current approaches, present performance analyses through graphical comparisons, and discuss prospective directions for integrating quantum algorithms into real-world scientific workflows. Our findings demonstrate that quantum computing is gradually transitioning from theoretical frameworks to experimental platforms capable of addressing highly complex computational challenges.
Quantum computing (QC) presents transformative potential for solving complex scientific problems that remain intractable for classical computers. Leveraging quantum superposition, entanglement, and interference, quantum algorithms such as Shor’s factoring algorithm, Grover’s search algorithm, variational quantum eigensolvers (VQE), and quantum approximate optimization algorithms (QAOA) enable exponential or polynomial speedups for selected problem classes. This paper explores recent advancements in quantum computing algorithms, their practical implementations, and emerging applications in fields such as molecular simulations, material science, cryptography, optimization, and machine learning. We highlight the strengths and limitations of current approaches, present performance analyses through graphical comparisons, and discuss prospective directions for integrating quantum algorithms into real-world scientific workflows. Our findings demonstrate that quantum computing is gradually transitioning from theoretical frameworks to experimental platforms capable of addressing highly complex computational challenges.
Quantum computing leverages the fundamental principles of quantum mechanics to address problems that are computationally infeasible for classical systems. This paper presents a comprehensive study of quantum computing with a focus on its mathematical foundations—superposition, entanglement, quantum gates, and quantum circuits. We explore the im- plementation and practical significance of core quantum algorithms, in- cluding Shor’s algorithm for integer factorization and Grover’s algorithm for unstructured search. Emerging domains such as quantum machine learning, quantum optimization, and quantum chemistry are also exam- ined. Mathematical examples are used to illustrate the operational mech- anisms of quantum systems in real-world applications. We further ana- lyze key challenges, including scalability, quantum error correction, and hardware constraints. The paper concludes with a discussion on future research directions and the evolving role of quantum computing in modern computational paradigms.
Quantum computing, with its potential to revolutionize computation, relies fundamentally on the development of efficient algorithms to leverage its unparalleled processing capabilities. This research delves into the creation, exploration, and refinement of quantum computing algorithms, focusing on their applications in optimization, cryptography, and machine learning. Quantum algorithms such as Shor's and Grover's have demonstrated remarkable advantages in factorization and search problems, while more recent innovations are tackling complex challenges in global optimization and data analysis. By integrating principles of quantum mechanics—such as superposition, entanglement, and interference—these algorithms promise exponential speed-ups over classical counterparts in specific domains. This study critically analyzes existing quantum algorithms, proposes advancements in hybrid quantum-classical frameworks, and explores their implications for practical problem-solving. Through simulations and theoretical evaluations, it aims to bridge the gap between quantum theory and real-world applications, contributing to the evolution of quantum computing as a transformative technology.
Quantum computing stands at the frontier of computational technology, offering a radical departure from classical computing paradigms. This article provides a comprehensive exploration of quantum computing fundamentals, recent technological advancements, and potential applications across various domains. Beginning with core quantum concepts such as qubits, superposition, and entanglement, the discussion progresses to address critical challenges in quantum system development, including scalability, error correction, and coherence time improvements. The article examines breakthrough algorithms including Shor's algorithm, Grover's algorithm, the Quantum Approximate Optimization Algorithm (QAOA), and the Variational Quantum Eigensolver (VQE), highlighting their theoretical advantages and experimental implementations. Applications in cryptography, optimization, materials science, and machine learning demonstrate quantum computing's transformative potential. While significant technical hurdles remain, the roadmap toward fault-tolerant quantum computing shows promising developments in qubit quality, error correction techniques, and system architecture that may enable practical quantum advantage within the coming decade.