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Topic: Quantum information theory

	Quantum information science - Wikipedia, the free encyclopedia
		The term quantum information theory is sometimes used, but it fails to encompass experimental research in the area.
		Quantum teleportation is one well-known quantum information processing operation which reliably transfers an unknown quantum state from one point to another distant point, destroying the original state in the process.
		The quantum information group at the University of Leeds is engaged in researching a wide spectrum of aspects of quantum information.
	en.wikipedia.org /wiki/Quantum_information_theory (248 words)

	Quantum Information Theory
		Its adherents consider this to be a quantum theory of information and, though it has not been developed very far, it is indeed a precursor of more recent work in quantum theory.
		Quantum generalizations of Shannon's expression (4) for channel capacity began to appear in the sixties, and shortly later quantum bounds on information storage capacity were obtained.
		For this reason, new methods of secure information transfer are being explored, and one very promising scheme is that of quantum cryptography, which in turn employs some fundamental features of quantum information theory.
	w3.uwyo.edu /~wtg/infophys/node17.html (0 words)

	CLASSICAL and QUANTUM INFORMATION THEORY
		Information is the underlying basis of the Quantum Consciousness of All Life in ALL SPACES.
		Quantum Computing and Information Theory, a promising New Technology, is based on the Galois field GF(4) = {0,1,w,w^2} where w = (1/2)(- 1 + sqrt(3) i) and w^2 = (1/2)(- 1 - sqrt(3) i).
		In quantum information theory, Cerf and Adami describe virtual qubit-anti-qubit pairs (they call them ebit-anti-ebit pairs) that are related to negative conditional entropies for quantum entangled systems and are similar to fermion particle-antiparticle pairs of particle physics.
	www.valdostamuseum.org /hamsmith/info.html (0 words)

	QUANTUM COMPUTATION AND QUANTUM INFORMATION THEORY
		Quantum information theory has revolutionised our view on the true nature of information and has led to such intriguing topics as teleportation and quantum computation.
		The field — by its very nature strongly interdisciplinary, with deep roots in the foundations both of quantum mechanics and of information theory and computer science — has become a major subject for scientists working in fields as diverse as quantum optics, superconductivity or information theory, all the way to computer engineers.
		The aim of this book is to provide guidance and introduce the broad literature in all the various aspects of quantum information theory.
	www.worldscibooks.com /physics/4261.html (0 words)

	Fall Semester 2002, Math 394A (Site not responding. Last check: 2007-09-23)
		It expresses a correlation of subsystems of a quantum physical system which appears naturally as soon as the commutative algebras of functions in classical physics are replaced by non-commutative algebras of operators (matrices) in quantum physics.
		Mathematically, noncommutative structures described by operator theory, the theory of operator algebras and the theory of completely positive maps are at the heart of these phenomena.
		Quantum computing has triggered the need for new encryption schemes, which has led to the field of quantum cryptography, currently a very active research area.
	www.math.vanderbilt.edu /~bisch/394A_fall02.html (0 words)

	Quantum Optics Innsbruck - Research (Site not responding. Last check: 2007-09-23)
		Quantum Information Theory (QIT) is one of the most rapidly developing areas of Physics.
		In the same way as classical information theory is the basis of most applications in communication and computation devices nowadays, present developments in the field of quantum information theory may become the basis of future applications that make use of some quantum mechanical phenomena.
		Moreover, the first experimental steps towards contrasting these theories are being taken, but in many cases we are still far from being able to use Quantum Information Theory in practical applications.
	bozon.uibk.ac.at /qo/qinf.html (0 words)

	Peter Shor's Publications
		The adaptive classical capacity of a quantum channel, or information capacities of three symmetric pure states in three dimensions.
		This paper shows that if you want to extract the most Shannon information from an ensemble of quantum states, and there are three states and three real dimensions, you may need a positive operator valued measurement with six elements, which is the upper bound given by Davies' theorem.
		This paper presents a family of quantum error-correcting codes whose capacity (slightly) exceeds that of random coding for very noisy channels; random codes had previously been conjectured to be optimal.
	www-math.mit.edu /~shor/elecpubs.html (0 words)

	Quantum Information Theory (L24) (Site not responding. Last check: 2007-09-23)
		The quantum part of the course will commence with a study of open systems and of a discussion of how they necessitate a generalization of the basic postulates of Quantum Mechanics.
		The concept of decoherence and quantum error correction will be introduced and various examples of quantum error-correcting codes will be discussed in detail.
		Entanglement-assisted capacity of a quantum channel and the reverse Shannon theorem.
	www.maths.cam.ac.uk /postgrad/courses/descriptions/node43.html (0 words)

	Quantum Computation and Information Theory Course
		Quantum theory is not a prerequisite, and appropriate quantum concepts will be introduced as needed.
		Similarly, algorithms and complexity theory are not prerequisites, and the appropriate concepts will be introduced as needed.
		Centre for Quantum Computation, University of Oxford Tutorials and introductory articles covering various aspects of quantum information.
	quantum.phys.cmu.edu /QCQI (0 words)

	Quantum Information Theory @ Sydney
		Also, there is strong evidence that a quantum computer operating according to quantum physics could change the rules of computer science, solving problems that are intractable on any current computing device.
		These observations, which promise great future technological advances based on quantum information processing, have gone hand-in-hand with remarkable scientific breakthroughs in our understanding of quantum physics.
		The answer will have implications for both future technologies and fundamental quantum physics and is the topic of the exciting new interdisciplinary field of quantum information theory.
	www.physics.usyd.edu.au /quantum (0 words)

	[No title] (Site not responding. Last check: 2007-09-23)
		In Lent 2003 and Lent 2004 the course was lectured jointly with Dr N. Datta.
		Ekert) and `Quantum Information Science' given in Lent 2004 (lecturer: Dr A. Kent).
		A shortened version of the course Information Theory has been prepared for the Summer School and Worshops on Theory and Technology in Quantum information, communication, computation and cryptography (12-23 June 2006, ICTP, Trieste).
	www.statslab.cam.ac.uk /~yms (0 words)

	IMaPh: Quantum Information
		This is the home page of a research group lead by Reinhard F. Werner, based in the Institute for Mathematical Physics at the Technical University of Braunschweig (Germany).
		The aim of this group is to clarify the basic structures relevant to quantum information theory, and to provide tools for a rigorous quantitative theory of concepts such as quantum and classical capacity of quantum channels, and entanglement of states on composite quantum systems.
		Nationally, we are participating in the research effort "Quantum Information Processing", supported by the Deutsche Forschungsgemeinschaft (DFG; roughly: German National Science Foundation), and on the European scale in the program Quantum Information Processing and Communications (QIPC) in the 5th Framework Programme of the European Commission (Project EQUIP).
	www.imaph.tu-bs.de /qi/qi.html (0 words)

	Quit > quantum information theory group
		Miniworkshop on Quantum Mechanics: Axiomatics of Measurements and connections with Computing and Information Retrieval II, June 28-29
		Itamar Pitowski: The quantum de Finetti - Dubins extension theorem: Gleason and coherence
		Inverting quantum decoherence by classical feedback from the environment PRL
	www.qubit.it (0 words)

	Quantum Information Theory
		Our main interest is on the interface between quantum information theory and quantum optics.
		In this project we are working on theory to close the gap between theoretical concepts for key distribution and their experimental implementation.
		Optical systems together with linear optical elements (beam splitters and phase shifters) offer a range of manipulations that are suitable to process quantum information with todays technology.
	kerr.physik.uni-erlangen.de /qit (0 words)

	Quantum Computation at UC Berkeley
		Welcome to the Quantum Information Theory group at the University of California at Berkeley.
		January 9 - 12, QIP 2001: Fourth Workshop on Quantum Information Processing (Amsterdam, The Netherlands)
		QIP 2002: The Fifth Workshop on Quantum Information Processing (New York, NY, USA)
	quantum.cs.berkeley.edu (0 words)

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