Products related to Quantum:
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Quantum Communication, Quantum Networks, and Quantum Sensing
Quantum Communication, Quantum Networks, and Quantum Sensing represents a self-contained introduction to quantum communication, quantum error-correction, quantum networks, and quantum sensing.It starts with basic concepts from classical detection theory, information theory, and channel coding fundamentals before continuing with basic principles of quantum mechanics including state vectors, operators, density operators, measurements, and dynamics of a quantum system.It continues with fundamental principles of quantum information processing, basic quantum gates, no-cloning and theorem on indistinguishability of arbitrary quantum states.The book then focuses on quantum information theory, quantum detection and Gaussian quantum information theories, and quantum key distribution (QKD).The book then covers quantum error correction codes (QECCs) before introducing quantum networks.The book concludes with quantum sensing and quantum radars, quantum machine learning and fault-tolerant quantum error correction concepts.
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The Physics of Quantum Information : Quantum Cryptography, Quantum Teleportation, Quantum Computation
Information is stored, transmitted and processed by physical means.Thus, the concept of information and computation can be formulated in the con text of a physical theory and the study of information requires ultimately experimentation.This sentence, innocuous at first glance, leads to non-trivial consequences.Following Moore's law, about every 18 months microprocessors double their speed and, it seems, the only way to make them significantly faster is to make them smaller.In the not too distant future they will reach the point where the logic gates are so small that they consist of only a few atoms each.Then quantum-mechanical effects will become important.Thus, if computers are to continue to become faster (and therefore smaller), new, quantum technology must replace or supplement what we have now.But it turns out that such technology can offer much more than smaller and faster microprocessors.Several recent theoretical results have shown that quantum effects may be harnessed to provide qualitatively new modes of communication and computation, in some cases much more powerful than their classical counterparts.This new quantum technology is being born in many laboratories.The last two decades have witnessed experiments in which single quantum particles of different kinds were controlled and manipulated with an unprecedented preci sion.Many "gedanken" experiments, so famous in the early days of quantum mechanics, have been carried out.
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Lessons From Nanoelectronics: A New Perspective On Transport - Part B: Quantum Transport
Everyone is familiar with the amazing performance of a modern smartphone, powered by a billion-plus nanotransistors, each having an active region that is barely a few hundred atoms long.The same amazing technology has also led to a deeper understanding of the nature of current flow and heat dissipation on an atomic scale which is of broad relevance to the general problems of non-equilibrium statistical mechanics that pervade many different fields.This book is based on a set of two online courses originally offered in 2012 on nanoHUB-U and more recently in 2015 on edX.In preparing the second edition the author decided to split it into parts A and B titled Basic Concepts and Quantum Transport respectively, along the lines of the two courses.A list of available video lectures corresponding to different sections of this volume is provided upfront.To make these lectures accessible to anyone in any branch of science or engineering, the author assume very little background beyond linear algebra and differential equations.However, the author will be discussing advanced concepts that should be of interest even to specialists, who are encouraged to look at his earlier books for additional technical details.
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Modern Quantum Theory : From Quantum Mechanics to Entanglement and Quantum Information
In the last few decades quantum theory has experienced an extensive revival owing to the rapid development of quantum information and quantum technologies.Based on a series of courses taught by the authors, the book takes the reader on a journey from the beginnings of quantum theory in the early twentieth century to the realm of quantum-information processing in the twenty-first.The central aim of this textbook, therefore, is to offer a detailed introduction to quantum theory that covers both physical and information-theoretic aspects, with a particular focus on the concept of entanglement and its characteristics, variants, and applications.Suitable for undergraduate students in physics and related subjects who encounter quantum mechanics for the first time, this book also serves as a resource for graduate students who want to engage with more advanced topics, offering a collection of derivations, proofs, technical methods, and references for graduate students and more experienced readers engaged with teaching and active research. The book is divided into three parts: Part I - Quantum Mechanics, Part II - Entanglement and Non-Locality, and Part III - Advanced Topics in Modern Quantum Physics.Part I provides a modern view on quantum mechanics, a central topic of theoretical physics.Part II is dedicated to the foundations of quantum mechanics and entanglement: starting with density operators, hidden-variable theories, the Einstein-Podolsky-Rosen Paradox, and Bell Inequalities, but also touching upon philosophical questions, followed by a deeper study of entanglement-based quantum communication protocols like teleportation, before giving a detailed exposition of entanglement theory, including tools for the detection and quantification of entanglement.Part III is intended as a collection of standalone chapters to supplement the contents of Parts I and II, covering more advanced topics such as classical and quantum entropies, quantum operations and measurements, decoherence, quantum metrology and quantum optics, and entanglement in particle physics.
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Is quantum mechanics a subfield of quantum physics?
Yes, quantum mechanics is a subfield of quantum physics. Quantum physics is a broad field that encompasses the study of the behavior of matter and energy at the quantum level, while quantum mechanics specifically focuses on the mathematical framework and principles that describe the behavior of particles and waves at the quantum level. Quantum mechanics is a fundamental theory within the broader field of quantum physics, providing the foundation for understanding the behavior of particles and systems at the quantum scale.
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What is the difference between quantum physics and quantum mechanics?
Quantum physics is a broad field of study that encompasses the fundamental principles and phenomena of the quantum world, including the behavior of particles at the atomic and subatomic levels. Quantum mechanics, on the other hand, is a specific branch of physics that focuses on the mathematical framework and formalism used to describe the behavior of particles at the quantum level. In other words, quantum physics is the broader study of the quantum world, while quantum mechanics is the specific set of principles and mathematical tools used to understand and describe it.
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What is the difference between quantum mechanics and quantum physics?
Quantum mechanics and quantum physics are often used interchangeably, but there is a subtle difference between the two terms. Quantum mechanics is a specific branch of physics that deals with the mathematical description of the behavior of particles at the atomic and subatomic levels. On the other hand, quantum physics is a broader term that encompasses the study of the behavior of matter and energy at the quantum level, including quantum mechanics as well as other related fields such as quantum field theory and quantum electrodynamics. In essence, quantum mechanics is a subset of quantum physics, focusing specifically on the mathematical framework for understanding the behavior of particles at the quantum level.
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Is there a difference between quantum physics and quantum mechanics?
Quantum physics and quantum mechanics are often used interchangeably, but there is a subtle difference between the two. Quantum physics is a broader field that encompasses the study of the behavior of matter and energy at the quantum level, including quantum mechanics. Quantum mechanics, on the other hand, specifically refers to the mathematical framework and principles that describe the behavior of particles at the quantum level. In essence, quantum mechanics is a subset of quantum physics, focusing on the mathematical and theoretical aspects of quantum phenomena.
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Quantum Information Processing, Quantum Computing, and Quantum Error Correction : An Engineering Approach
The Second Edition of Quantum Information Processing, Quantum Computing, and Quantum Error Correction: An Engineering Approach presents a self-contained introduction to all aspects of the area, teaching the essentials such as state vectors, operators, density operators, measurements, and dynamics of a quantum system.In additional to the fundamental principles of quantum computation, basic quantum gates, basic quantum algorithms, and quantum information processing, this edition has been brought fully up to date, outlining the latest research trends.These include: Key topics include: Quantum error correction codes (QECCs), including stabilizer codes, Calderbank-Shor-Steane (CSS) codes, quantum low-density parity-check (LDPC) codes, entanglement-assisted QECCs, topological codes, and surface codes Quantum information theory, and quantum key distribution (QKD) Fault-tolerant information processing and fault-tolerant quantum error correction, together with a chapter on quantum machine learning.Both quantum circuits- and measurement-based quantum computational models are described The next part of the book is spent investigating physical realizations of quantum computers, encoders and decoders; including photonic quantum realization, cavity quantum electrodynamics, and ion traps In-depth analysis of the design and realization of a quantum information processing and quantum error correction circuits This fully up-to-date new edition will be of use to engineers, computer scientists, optical engineers, physicists and mathematicians.
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Quantum Mechanics for Beginners : With Applications to Quantum Communication and Quantum Computing
Quantum mechanics is a highly successful yet mysterious theory.Quantum Mechanics for Beginners provides an accessible introduction to this fascinating subject for those with only a high school background in physics and mathematics.This book is entirely algebra-based, except for the last chapter on the Schrodinger equation.A major advantage of this book is that it provides an introduction to the fields of quantum communication and quantum computing.Topics covered include wave-particle duality, Heisenberg uncertainty relation, Bohr's principle of complementarity, quantum superposition and entanglement, Schrodinger's cat, Einstein-Podolsky-Rosen paradox, Bell theorem, quantum no-cloning theorem and quantum copying, quantum eraser and delayed choice, quantum teleportation, quantum key distribution protocols such as BB-84 and B-92, counterfactual communication, quantum money, quantum Fourier transform, quantum computing protocols including Shor and Grover algorithms, quantum dense coding, and quantum tunneling.All these topics and more are explained fully, but using only elementary mathematics.Each chapter is followed by exercises and a short list of references.This book is meant for beginning college students as well as advanced high school students, and can be used as a text for a one-semester course at the undergraduate level.It can also be useful for those who want to learn some of the fascinating recent and ongoing developments in areas related to the foundations of quantum mechanics and its applications to areas like quantum communication and quantum computing.
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The Quantum Internet : The Second Quantum Revolution
Following the emergence of quantum computing, the subsequent quantum revolution will be that of interconnecting individual quantum computers at the global level.In the same way that classical computers only realised their full potential with the emergence of the internet, a fully-realised quantum internet is the next stage of evolution for quantum computation.This cutting-edge book examines in detail how the quantum internet would evolve in practise, focusing not only on the technology itself, but also the implications it will have economically and politically, with numerous non-technical sections throughout the text providing broader context to the discussion.The book begins with a description of classical networks before introducing the key concepts behind quantum networks, such as quantum internet protocols, quantum cryptography, and cloud quantum computing.Written in an engaging style and accessible to graduate students in physics, engineering, computer science and mathematics.
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Introduce to Quantum Computing and Quantum Computer
Recently (2020,06), according to the Financial Times, Google researcher Stephen Foley claimed "Big moment!Google claims to have researced quantum supremacy, taking 3 mins to do a calculation classical computer would take 10,000 years to do". After 10 years or more, the commercial quantum computers will come to the era of information explosion that we are now in. And the power of quantum computer is far greater than our imagination. Quantum computers use qubits |0> and |1> to process information, where, |1> represent up-spin electron, and |0> represents the down spin electron.Meanwhile, the up-spin electrons and the down-spin electrons are interdependent, forming a quantum entangled state or quantum superposition state.Therefore, the superposition state of quantum can be expressed as (a|1> + b|0>) = (|00>+|01>+|10>+|11>).That is, two qubits has 4 states, which is 2^n times larger than the traditional number of bits ("0" and "1"), where n is the number of contained electrons.This means that the computing speed of quantum computers are 2^n times faster than traditional computers. Not only this, the "0" and "1" codes of traditional computers are processed along one time axis, and quantum computers can be calculated using Shor's parallel algorithm, that is, each quantum in a quantum computer has an independent time axis, n quanta can be processed in parallel on their own time axis.In other words, for n quanta, there will be n time axes processing at the same time.In this way, quantum computers are much faster than traditional computers.In other words, the information that quantum computers can process is much larger than that of traditional computers.
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What is the difference between a motor vehicle and an automobile?
The term "motor vehicle" is a broad category that includes any self-propelled vehicle, such as cars, trucks, motorcycles, and buses. On the other hand, an "automobile" specifically refers to a four-wheeled passenger vehicle designed for personal transportation. In other words, all automobiles are motor vehicles, but not all motor vehicles are automobiles. The term "automobile" is often used interchangeably with "car" in everyday language.
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What is quantum entanglement?
Quantum entanglement is a phenomenon in quantum physics where two or more particles become connected in such a way that the state of one particle is dependent on the state of the other, regardless of the distance between them. This means that measuring the state of one particle instantly determines the state of the other, even if they are light-years apart. This mysterious connection defies classical physics and has been described by Albert Einstein as "spooky action at a distance." Quantum entanglement is a key principle in quantum mechanics and has potential applications in quantum computing and cryptography.
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What is quantum philosophy?
Quantum philosophy is a branch of philosophy that explores the implications of quantum theory for our understanding of reality, knowledge, and consciousness. It examines how the principles of quantum mechanics challenge traditional philosophical concepts such as causality, determinism, and objectivity. Quantum philosophy also delves into the nature of observation and measurement, as well as the relationship between the observer and the observed. Overall, quantum philosophy seeks to bridge the gap between the physical world described by quantum mechanics and our philosophical understanding of reality.
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What are quantum energies?
Quantum energies refer to the energy levels associated with the behavior of particles at the quantum level. In quantum mechanics, particles such as electrons can exist in discrete energy states, and the energy of these states is quantized, meaning it can only take on certain specific values. These energy levels play a crucial role in determining the behavior and properties of particles at the quantum scale, and are fundamental to understanding the behavior of atoms and molecules. Quantum energies are also important in fields such as quantum computing and quantum cryptography.
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