scispace - formally typeset

Quantum information

About: Quantum information is a(n) research topic. Over the lifetime, 22783 publication(s) have been published within this topic receiving 911322 citation(s). more


Open accessBook
01 Jan 2000-
Abstract: Part I Fundamental Concepts: 1 Introduction and overview 2 Introduction to quantum mechanics 3 Introduction to computer science Part II Quantum Computation: 4 Quantum circuits 5 The quantum Fourier transform and its application 6 Quantum search algorithms 7 Quantum computers: physical realization Part III Quantum Information: 8 Quantum noise and quantum operations 9 Distance measures for quantum information 10 Quantum error-correction 11 Entropy and information 12 Quantum information theory Appendices References Index more

Topics: Quantum technology (86%), Open quantum system (84%), Quantum information (84%) more

25,609 Citations

Open access
01 Dec 2010-
Abstract: Part I. Fundamental Concepts: 1. Introduction and overview 2. Introduction to quantum mechanics 3. Introduction to computer science Part II. Quantum Computation: 4. Quantum circuits 5. The quantum Fourier transform and its application 6. Quantum search algorithms 7. Quantum computers: physical realization Part III. Quantum Information: 8. Quantum noise and quantum operations 9. Distance measures for quantum information 10. Quantum error-correction 11. Entropy and information 12. Quantum information theory Appendices References Index. more

Topics: Quantum information (84%), Quantum computer (79%), Quantum Fourier transform (75%) more

14,183 Citations

Journal ArticleDOI: 10.1017/S0960129507006317
Thierry Paul1Institutions (1)
Abstract: This special issue of Mathematical Structures in Computer Science contains several contributions related to the modern field of Quantum Information and Quantum Computing. The first two papers deal with entanglement. The paper by R. Mosseri and P. Ribeiro presents a detailed description of the two-and three-qubit geometry in Hilbert space, dealing with the geometry of fibrations and discrete geometry. The paper by J.-G.Luque et al. is more algebraic and considers invariants of pure k-qubit states and their application to entanglement measurement. more

Topics: Quantum algorithm (66%), Quantum technology (65%), Quantum geometry (64%) more

12,173 Citations

Proceedings ArticleDOI: 10.1109/SFCS.1994.365700
Peter W. Shor1Institutions (1)
20 Nov 1994-
Abstract: A computer is generally considered to be a universal computational device; i.e., it is believed able to simulate any physical computational device with a cost in computation time of at most a polynomial factor: It is not clear whether this is still true when quantum mechanics is taken into consideration. Several researchers, starting with David Deutsch, have developed models for quantum mechanical computers and have investigated their computational properties. This paper gives Las Vegas algorithms for finding discrete logarithms and factoring integers on a quantum computer that take a number of steps which is polynomial in the input size, e.g., the number of digits of the integer to be factored. These two problems are generally considered hard on a classical computer and have been used as the basis of several proposed cryptosystems. We thus give the first examples of quantum cryptanalysis. > more

Topics: Quantum algorithm (66%), Quantum computer (64%), Quantum sort (62%) more

5,655 Citations

Journal ArticleDOI: 10.1038/35051009
04 Jan 2001-Nature
Abstract: Quantum computers promise to increase greatly the efficiency of solving problems such as factoring large integers, combinatorial optimization and quantum physics simulation. One of the greatest challenges now is to implement the basic quantum-computational elements in a physical system and to demonstrate that they can be reliably and scalably controlled. One of the earliest proposals for quantum computation is based on implementing a quantum bit with two optical modes containing one photon. The proposal is appealing because of the ease with which photon interference can be observed. Until now, it suffered from the requirement for non-linear couplings between optical modes containing few photons. Here we show that efficient quantum computation is possible using only beam splitters, phase shifters, single photon sources and photo-detectors. Our methods exploit feedback from photo-detectors and are robust against errors from photon loss and detector inefficiency. The basic elements are accessible to experimental investigation with current technology. more

Topics: Linear optical quantum computing (72%), Quantum algorithm (66%), Quantum network (65%) more

4,750 Citations

No. of papers in the topic in previous years

Top Attributes

Show by:

Topic's top 5 most impactful authors

Guang-Can Guo

106 papers, 1.6K citations

Mark M. Wilde

86 papers, 3.5K citations

Timothy C. Ralph

70 papers, 6.2K citations

William J. Munro

69 papers, 5.2K citations

Raymond Laflamme

63 papers, 12.1K citations

Network Information
Related Topics (5)
Quantum information science

10.4K papers, 396.9K citations

97% related
Quantum state

21.7K papers, 552K citations

97% related

29.9K papers, 723K citations

97% related
Quantum network

14K papers, 612.4K citations

97% related
Quantum error correction

10.2K papers, 487.5K citations

97% related