Computing with Quantum Cats

From Colossus to Qubits

Author: John Gribbin

Publisher: Random House


Category: Science

Page: 304

View: 174

The quantum computer is no longer the stuff of science fiction. Pioneering physicists are on the brink of unlocking a new quantum universe which provides a better representation of reality than our everyday experiences and common sense ever could. The birth of quantum computers – which, like Schrödinger’s famous ‘dead and alive’ cat, rely on entities like electrons, photons or atoms existing in two states at the same time – is set to turn the computing world on its head. In his fascinating study of this cutting-edge technology, John Gribbin updates his previous views on the nature of quantum reality, arguing for a universe of many parallel worlds where ‘everything is real’. Looking back to Alan Turing’s work on the Enigma machine and the first electronic computer, Gribbin explains how quantum theory developed to make quantum computers work in practice as well as in principle. He takes us beyond the arena of theoretical physics to explore their practical applications – from machines which learn through ‘intuition’ and trial and error to unhackable laptops and smartphones. And he investigates the potential for this extraordinary science to create a world where communication occurs faster than light and teleportation is possible.

Quantum Theory: a Crash Course





Page: 160

View: 617

Quantum Theory: A Crash Course teaches you everything you need to know about this complex subject, breaking it down into 52 digestible topics. The book is divided into four chapters, covering various aspects of the theory: Its foundations and principles Its probabalistic nature and concepts The wide range of scientific interpretations Its practical applications in our lives Each chapter contains an overview, timeline and four biographies, followed by thirteen illustrated topics, each broken down into microscopic chunks. 'The Main Concept' explains the main concept of the subject, while 'Drill-Down' provides further detail or a different angle to enhance understanding. Finally, 'Matter' provides a fascinating or unusual fact. This is the perfect crash course for budding quantum theorists.

Quantum Computing and Communications

An Engineering Approach

Author: Sandor Imre

Publisher: John Wiley & Sons


Category: Computers

Page: 256

View: 545

Quantum computers will revolutionize the way telecommunications networks function. Quantum computing holds the promise of solving problems that would be intractable with conventional computers by implementing principles from quantum physics in the development of computer hardware, software and communications equipment. Quantum-assisted computing will be the first step towards full quantum systems, and will cause immense disruption of our traditional networks. The world’s biggest manufacturers are investing large amounts of resources to develop crucial quantum-assisted circuits and devices. Quantum Computing and Communications: Gives an overview of basic quantum computing algorithms and their enhanced versions such as efficient database searching, counting and phase estimation. Introduces quantum-assisted solutions for telecom problems including multi-user detection in mobile systems, routing in IP based networks, and secure ciphering key distribution. Includes an accompanying website featuring exercises (with solution manual) and sample algorithms from the classical telecom world, corresponding quantum-based solutions, bridging the gap between pure theory and engineering practice. This book provides telecommunications engineers, as well as graduate students and researchers in the fields of computer science and telecommunications, with a wide overview of quantum computing & communications and a wealth of essential, practical information.

Black Bodies and Quantum Cats

Tales from the Annals of Physics

Author: Jennifer Ouellette

Publisher: Penguin


Category: Science

Page: 336

View: 221

Physics, once known as "natural philosophy," is the most basic science, explaining the world we live in, from the largest scale down to the very, very, very smallest, and our understanding of it has changed over many centuries. In Black Bodies and Quantum Cats, science writer Jennifer Ouellette traces key developments in the field, setting descriptions of the fundamentals of physics in their historical context as well as against a broad cultural backdrop. Newton’s laws are illustrated via the film Addams Family Values, while Back to the Future demonstrates the finer points of special relativity. Poe’s "The Purloined Letter" serves to illuminate the mysterious nature of neutrinos, and Jeanette Winterson’s novel Gut Symmetries provides an elegant metaphorical framework for string theory. An enchanting and edifying read, Black Bodies and Quantum Cats shows that physics is not an arcane field of study but a profoundly human endeavor—and a fundamental part of our everyday world.

Decoherence and Its Implications in Quantum Computation and Information Transfer

Author: Tony Gonis

Publisher: IOS Press


Category: Computers

Page: 366

View: 553

Decoherence is the physical process by which the classical world - the world of common sense - emerges from its quantum underpinnings. This physical process refers to the loss of phase coherence between the parts of a quantum system, because of the interaction of the system with the environment.

Schrödinger's Killer App

Race to Build the World's First Quantum Computer

Author: Jonathan P. Dowling

Publisher: CRC Press


Category: Mathematics

Page: 453

View: 980

The race is on to construct the first quantum code breaker, as the winner will hold the key to the entire Internet. From international, multibillion-dollar financial transactions to top-secret government communications, all would be vulnerable to the secret-code-breaking ability of the quantum computer. Written by a renowned quantum physicist closely involved in the U.S. government’s development of quantum information science, Schrödinger’s Killer App: Race to Build the World’s First Quantum Computer presents an inside look at the government’s quest to build a quantum computer capable of solving complex mathematical problems and hacking the public-key encryption codes used to secure the Internet. The "killer application" refers to Shor’s quantum factoring algorithm, which would unveil the encrypted communications of the entire Internet if a quantum computer could be built to run the algorithm. Schrödinger’s notion of quantum entanglement—and his infamous cat—is at the heart of it all. The book develops the concept of entanglement in the historical context of Einstein’s 30-year battle with the physics community over the true meaning of quantum theory. It discusses the remedy to the threat posed by the quantum code breaker: quantum cryptography, which is unbreakable even by the quantum computer. The author also covers applications to other important areas, such as quantum physics simulators, synchronized clocks, quantum search engines, quantum sensors, and imaging devices. In addition, he takes readers on a philosophical journey that considers the future ramifications of quantum technologies. Interspersed with amusing and personal anecdotes, this book presents quantum computing and the closely connected foundations of quantum mechanics in an engaging manner accessible to non-specialists. Requiring no formal training in physics or advanced mathematics, it explains difficult topics, including quantum entanglement, Schrödinger’s cat, Bell’s inequality, and quantum computational complexity, using simple analogies.

Most Wanted Particle

The Inside Story of the Hunt for the Higgs, the Heart of the Future of Physics

Author: Jon Butterworth

Publisher: The Experiment


Category: Science

Page: 308

View: 960

An award-winning physicist who led the historic hunt for the God Particle offers “an excellent, accessible guide to one of science’s greatest discoveries” (The Sunday Times). An Observer Top Ten Science and Technology Book Our understanding of the universe hinges on a baffling question: how does a sea of tiny, massless particles acquire mass? The answer, in theory, is a subatomic particle known as the Higgs boson. Sometimes called the God Particle, the Higgs is the missing link between the birth of our universe and the tangible world we experience. But for more than fifty years, scientists wondered: Does the Higgs exist? Physicist Jon Butterworth was at the frontlines of the hunt for the Higgs at CERN’s Large Hadron Collider—perhaps the most ambitious experiment in history, conducted deep underground beneath the border of Switzerland and France, near Geneva. In Most Wanted Particle, Butterworth gives us a rare insider’s account of that exciting, uncertain time when life at the cutting edge of science meant media scrutiny, late-night pub debates, dispiriting false starts, and countless hours at the collider itself. As Butterworth explains, our first glimpse of the elusive Higgs brings us a giant step closer to understanding the universe—and points the way to an entirely new kind of physics. “A vivid account of what the process of discovery was really like for an insider.” —Peter Higgs

Quantum Physics in Minutes

Author: Gemma Lavender

Publisher: Hachette UK


Category: Science

Page: 416

View: 407

The fastest way to understanding quantum physics - learn about how our universe works, in minutes. Quantum physics is the most fundamental, but also the most bewildering, of sciences. Allowing for simultaneously dead-and-alive cats, teleportation, antimatter and parallel universes, it also underpins all digital technology and even life itself. But at last it's possible through this clear and compact book, illuminated with 200 simple diagrams for anyone to understand the strange and beautiful subatomic world, and hence the nature of reality itself. Contents include: inside the atom, the Higgs boson, Heisenberg's uncertainty principle, Schrödinger's cat, relativity, dark energy and matter, black holes, God playing dice, the Theory of Everything, the birth and fate of the Universe, string theory, quantum computing, superconductivity, quantum biology and consciousness, and much more.

Intrication Quantique Et Traitement de L'information

Author: J.-M. Raimond

Publisher: Elsevier


Category: Computers

Page: 608

View: 351

One major goal of this book is to establish connections between the communities of quantum optics and of quantum electronic devices working in the area of quantum computing. When two communities share the same goals, the universality of physics unavoidably leads to similar developments. However, the communication barrier is often high, and few physicists are able to overcome it. This school has contributed to bridge the existing gap between communities, for the benefit of the future actors in the field of quantum computing. The book thus combines introductory chapters, providing the reader with a sufficiently wide theoretical framework in quantum information, quantum optics and quantum circuits physics, with more specialized presentations of recent theoretical and experimental advances in the field. This structure makes the book accessible to any graduate student having a good knowledge of basic quantum mechanics, and extremely useful to researchers.-


And the Quantum-To-Classical Transition

Author: Maximilian A. Schlosshauer

Publisher: Springer Science & Business Media


Category: Computers

Page: 416

View: 149

This detailed, accessible introduction to the field of quantum decoherence reviews the basics and then explains the essential consequences of the phenomenon for our understanding of the world. The discussion includes, among other things: How the classical world of our experience can emerge from quantum mechanics; the implications of decoherence for various interpretations of quantum mechanics; recent experiments confirming the puzzling consequences of the quantum superposition principle and making decoherence processes directly observable.