Quantum computers can execute algorithms that sometimes dramatically outperform classical computation. Undoubtedly the best-known example of this is Shor's discovery of an efficient quantum algorithm for factoring integers, whereas the same problem appears to be intractable on classical computers. Understanding what other computational problems can be solved significantly faster using quantum algorithms is one of the major challenges in the theory of quantum computation, and such algorithms motivate the formidable task of building a large-scale quantum computer. This article will review the current state of quantum algorithms, focusing on algorithms for problems with an algebraic flavor that achieve an apparent superpolynomial speedup over classical computation.
Quantum computers can execute algorithms that sometimes dramatically outperform classical computation. Undoubtedly the best-known example of this is Shor's discovery of an efficient quantum algorithm for factoring integers, whereas the same problem appears to be intractable on classical computers. Understanding what other computational problems can be solved significantly faster using quantum algorithms is one of the major challenges in the theory of quantum computation, and such algorithms motivate the formidable task of building a large-scale quantum computer. This article will review the current state of quantum algorithms, focusing on algorithms for problems with an algebraic flavor that achieve an apparent superpolynomial speedup over classical computation.
Quantum computers can execute algorithms that dramatically outperform classical computation. As the best-known example, Shor discovered an efficient quantum algorithm for factoring integers, whereas factoring appears to be difficult for classical computers. Understanding what other computational problems can be solved significantly faster using quantum algorithms is one of the major challenges in the theory of quantum computation, and such algorithms motivate the formidable task of building a large-scale quantum computer. This article reviews the current state of quantum algorithms, focusing on algorithms with superpolynomial speedup over classical computation and, in particular, on problems with an algebraic flavor.
Quantum computing, based on the fundamental principles of quantum mechanics, has become a breakthrough that has the potential to revolutionize computing. At the forefront of this quantum revolution are quantum algorithms that use the origin of qubits to solve computational problems much faster than classical algorithms. This article provides a review of quantum algorithms to introduce their principles, examine famous examples such as the Grover and Shor algorithms, and delve into their applications, including quantum machine learning. Exploring the fundamentals of quantum computing begins with an overview that highlights the unique features of quantum computing compared to classical computing. We then examine several different algorithmic paradigms to highlight the unique advantages that quantum parallelism and interference bring to computing. The best knowledge of quantum algorithms focuses on Grover's blind search, Shor's efficient factorization algorithm, and the quantum phase approach for solving quantum chemistry and eigenvalue problems. As well as celebrating the achievements of quantum algorithms, this research also looks at the challenges and limitations that hinder their widespread use. Topics such as decoherence, error correction, and finding errors in quantum computing are discussed in the context of overcoming obstacles to the use of practical quantum algorithms. In addition, the latest developments are clarified by showing the successes of the experiments and their implications for the future. As we stand at the forefront of a new era in computing, this article not only provides a snapshot of the current state of quantum algorithms but also speculates on future directions. The potential applications of quantum algorithms in many fields and the ongoing quest to overcome current limitations offer exciting opportunities for further research. This research aims to contribute to the ongoing debate about quantum algorithms, gaining a deeper understanding of their impact on the future of computing.
The power of quantum mechanics, that is too complex for conventional computers, can be solved by an innovative model of computing known as quantum computing. Quantum algorithms can provide exponential speedups for some types of problems, such as many difficult mathematical ones. In this paper, we review some of the most important quantum algorithms for hard mathematical problems. When factoring large numbers, Shor's algorithm is orders of magnitude faster than any other known classical algorithm. The Grover's algorithm, which searches unsorted databases much more quickly than conventional algorithms, is then discussed.
Ever since the discovery of efficient quantum algorithms for factoring and computing discrete logarithms by Shor in 1994, the interest in quantum algorithms was growing within the theoretical computer science as well as the physics community. Surprisingly, the number of quantum algorithms found so far is quite small, although the number of researchers working on the subject is rapidly increasing. In fact, the task of designing new quantum algorithms has been proven to be extremely difficult. We give an overview of the problems for which an efficient quantum algorithm is known and briefly describe the underlying ideas. One large area of problems where a quantum computer appears to be superior to classical computers are the so-called hidden subgroup problems. We explain the relevance and the motivation behind this abstract class of problems.
Large-scale scientific problems in physics, chemistry, biology, and optimization often remain computationally intractable for classical computers due to exponential scaling and resource limitations. Quantum computing introduces a fundamentally new paradigm based on quantum superposition, entanglement, and interference, offering the potential to solve such problems more efficiently. This article examines major quantum computing algorithms developed for large-scale scientific applications, including quantum simulation, optimization, and linear system solvers. Emphasis is placed on algorithmic principles, performance advantages over classical methods, and real-world scientific use cases. Two graphical illustrations demonstrate quantum speedup trends and algorithm complexity comparisons. The study also highlights current limitations and future directions of quantum algorithms in scientific problem-solving.
Quantum computing has emerged as a revolutionary field that leverages quantum mechanics to perform computations exponentially faster than classical computers for certain problems. This paper explores the mathematical foundations and approaches underpinning quantum computing algorithms. The study delves into linear algebra, probability theory, group theory, and tensor calculus, which are integral to quantum algorithm design. Key algorithms such as Shor's algorithm for integer factorization and Grover's search algorithm are examined in detail, highlighting their mathematical structure and computational efficiency. The paper also discusses recent advances in quantum error correction and optimization algorithms for quantum systems.