Information measures, entanglement and quantum evolution Claudia Zander
... quantum information theory [21]. It also constitutes a rather useful heuristic tool for establishing new links between, or obtaining new derivations of, fundamental aspects of thermodynamics and other areas of physics [22]. Information is something that is encoded in a physical state of a system an ...
... quantum information theory [21]. It also constitutes a rather useful heuristic tool for establishing new links between, or obtaining new derivations of, fundamental aspects of thermodynamics and other areas of physics [22]. Information is something that is encoded in a physical state of a system an ...
Ph.D. Thesis Rodrigo Gallego
... the measurement outcomes. However, there exist situations where it is convenient to avoid as many ...
... the measurement outcomes. However, there exist situations where it is convenient to avoid as many ...
A Short Course on Topological Insulators
... ends, or “edges” of the chain, indicated by shading in Fig. 1.1. We first concentrate on the bulk, since, in the thermodynamic limit of N → ∞, it is much larger than the boundaries, and it will determine the most important physical properties of the model. Although the treatment of the bulk using th ...
... ends, or “edges” of the chain, indicated by shading in Fig. 1.1. We first concentrate on the bulk, since, in the thermodynamic limit of N → ∞, it is much larger than the boundaries, and it will determine the most important physical properties of the model. Although the treatment of the bulk using th ...
New Concepts in Inverse Quantum Chemistry - ETH E
... In this design procedure, we rely on density functional theory (DFT), which is the only current quantum chemical theory capable of treating relatively large systems at acceptable computational cost. The fact that the accuracy of a given density functional for a particular molecular system cannot be ...
... In this design procedure, we rely on density functional theory (DFT), which is the only current quantum chemical theory capable of treating relatively large systems at acceptable computational cost. The fact that the accuracy of a given density functional for a particular molecular system cannot be ...
Aspects of quantum information theory
... this end the text is divided into two parts. The first (Part I. “Fundamentals”) is of introductory nature. It takes into account that most of the fundamental concepts and basic ideas of quantum information are developed during the last decade, and are therefore unfamiliar to most physicists. To make ...
... this end the text is divided into two parts. The first (Part I. “Fundamentals”) is of introductory nature. It takes into account that most of the fundamental concepts and basic ideas of quantum information are developed during the last decade, and are therefore unfamiliar to most physicists. To make ...
ABSTRACT RANDOM ROUTING AND CONCENTRATION IN QUANTUM SWITCHING NETWORKS
... which can be implemented by the polarization states of a photon or the spin of a single atom, to exist in a superposition of the binary “0” and “1” states. With n qubits a quantum computer can be in 2n unique states at any given time. These states can be inter-correlated such that a single logic gat ...
... which can be implemented by the polarization states of a photon or the spin of a single atom, to exist in a superposition of the binary “0” and “1” states. With n qubits a quantum computer can be in 2n unique states at any given time. These states can be inter-correlated such that a single logic gat ...
A relevant two qubit Bell inequality inequivalent to the CHSH
... probabilities P (jA , jB |iA , iB ), which are assumed to satisfy the CHSH inequalities. He then constructs a lhv model which reproduces the measured probabilities. We shall describe the construction for the 3222 case: the general m222 case follows very naturally. First we define β to be the minimum ...
... probabilities P (jA , jB |iA , iB ), which are assumed to satisfy the CHSH inequalities. He then constructs a lhv model which reproduces the measured probabilities. We shall describe the construction for the 3222 case: the general m222 case follows very naturally. First we define β to be the minimum ...
Particle in a box
In quantum mechanics, the particle in a box model (also known as the infinite potential well or the infinite square well) describes a particle free to move in a small space surrounded by impenetrable barriers. The model is mainly used as a hypothetical example to illustrate the differences between classical and quantum systems. In classical systems, for example a ball trapped inside a large box, the particle can move at any speed within the box and it is no more likely to be found at one position than another. However, when the well becomes very narrow (on the scale of a few nanometers), quantum effects become important. The particle may only occupy certain positive energy levels. Likewise, it can never have zero energy, meaning that the particle can never ""sit still"". Additionally, it is more likely to be found at certain positions than at others, depending on its energy level. The particle may never be detected at certain positions, known as spatial nodes.The particle in a box model provides one of the very few problems in quantum mechanics which can be solved analytically, without approximations. This means that the observable properties of the particle (such as its energy and position) are related to the mass of the particle and the width of the well by simple mathematical expressions. Due to its simplicity, the model allows insight into quantum effects without the need for complicated mathematics. It is one of the first quantum mechanics problems taught in undergraduate physics courses, and it is commonly used as an approximation for more complicated quantum systems.