talk_pacific - University of Kentucky
... In Quantum Theory vacuum is not a “uniform medium”. Rather it is a fluctuating medium. This fluctuating nature is most naturally expressed in Feynman’s path integral formulation of quantum theory. Consider a Quantum-Mechanical particle described by ...
... In Quantum Theory vacuum is not a “uniform medium”. Rather it is a fluctuating medium. This fluctuating nature is most naturally expressed in Feynman’s path integral formulation of quantum theory. Consider a Quantum-Mechanical particle described by ...
Lossless Quantum Data Compression and Secure Direct
... The second main result concerns the construction and discussion of a novel quantum cryptographic protocol. This so-called “ping-pong protocol” developed in [P2] uses entanglement as a resource for secure communication. Similiar to the E91 protocol proposed by Ekert [13] and simplified by Bennet et a ...
... The second main result concerns the construction and discussion of a novel quantum cryptographic protocol. This so-called “ping-pong protocol” developed in [P2] uses entanglement as a resource for secure communication. Similiar to the E91 protocol proposed by Ekert [13] and simplified by Bennet et a ...
How far are we from the quantum theory of gravity?
... theory. When a path integral is involved it should be fully defined in terms of a well defined measure, or else expressed as a discrete summation. This led in each case to two lists, the first of results, the second of conjectures and open issues. These are summarized in Table 1, which indicates th ...
... theory. When a path integral is involved it should be fully defined in terms of a well defined measure, or else expressed as a discrete summation. This led in each case to two lists, the first of results, the second of conjectures and open issues. These are summarized in Table 1, which indicates th ...
Atoms, photons, and Information
... quantum and classical measurement in this setting is seen to be a link between the noise terms in the filter and the measurements made. Recently an experiment using a quantum Kalman filter to estimate a magnetic fields using a quantum ensemble of atoms whose state becomes quantum correlated due to m ...
... quantum and classical measurement in this setting is seen to be a link between the noise terms in the filter and the measurements made. Recently an experiment using a quantum Kalman filter to estimate a magnetic fields using a quantum ensemble of atoms whose state becomes quantum correlated due to m ...
Metric gluing of Brownian and sqrt(8/3)-Liouville
... and the Brownian plane are metric space quotients of countably many independent Brownian disks glued together along their boundaries; and that when one metrically glues together two independent Brownian surfaces, resulting surface locally looks like a Brownian surface (even at points along the glui ...
... and the Brownian plane are metric space quotients of countably many independent Brownian disks glued together along their boundaries; and that when one metrically glues together two independent Brownian surfaces, resulting surface locally looks like a Brownian surface (even at points along the glui ...
Quantum Energy Teleportation - UWSpace
... relation between energy, information and geometry is the 21st century holy grail of physics. The overall focus of this thesis is just that; the interplay between energy and correlations. We approach the topics from multiple different angles. One of the common themes is the coupling of probe systems ...
... relation between energy, information and geometry is the 21st century holy grail of physics. The overall focus of this thesis is just that; the interplay between energy and correlations. We approach the topics from multiple different angles. One of the common themes is the coupling of probe systems ...
NUCLEAR MAGNETIC RESONANCE QUANTUM COMPUTATION
... and other conventions. While they can seem strange is is essential to get used to them! The state of a single spin is described as a combination of four one-spin operators: 12 E, Ix , Iy and Iz . (In NMR experiments the first spin is traditionally called I, while later spins are usually called S, R ...
... and other conventions. While they can seem strange is is essential to get used to them! The state of a single spin is described as a combination of four one-spin operators: 12 E, Ix , Iy and Iz . (In NMR experiments the first spin is traditionally called I, while later spins are usually called S, R ...
Quantum Knots and Lattices, or a Blueprint for Quantum Systems
... Tazi understood the key intuitive idea that a curve in 3-space has at each point three local (i.e., infinitesimal) degrees of freedom. Can we use this intuition to create a usable well-defined set of moves which can form a basis for knot theory, much as the Reidemeister moves have filled that role? ...
... Tazi understood the key intuitive idea that a curve in 3-space has at each point three local (i.e., infinitesimal) degrees of freedom. Can we use this intuition to create a usable well-defined set of moves which can form a basis for knot theory, much as the Reidemeister moves have filled that role? ...
the final version of Abstract Book
... All these developments have brought new questions and challenges for the understanding the behavior of various systems and structures, both of natural and of artificial origin. They have also opened a vast arena for better tests of foundations of theories, hypothesis, and models, which are being use ...
... All these developments have brought new questions and challenges for the understanding the behavior of various systems and structures, both of natural and of artificial origin. They have also opened a vast arena for better tests of foundations of theories, hypothesis, and models, which are being use ...
PHYSICS 673 Nonlinear and Quantum Optics
... with χ̃(τ < 0) = 0 due to causality: the medium at time t cannot be affected by the field values at times greater than t. The time-dependent susceptibility has the meaning of the medium’s response ...
... with χ̃(τ < 0) = 0 due to causality: the medium at time t cannot be affected by the field values at times greater than t. The time-dependent susceptibility has the meaning of the medium’s response ...
Introduction to Nonequilibrium Quantum Field Theory
... dynamics. Connecting this far-from-equilibrium dynamics at early times with the approach to thermal equilibrium at late times is a challenge for theory. The experiments seem to indicate early thermalization whereas the present theoretical understanding of QCD suggests a much longer thermal equilibra ...
... dynamics. Connecting this far-from-equilibrium dynamics at early times with the approach to thermal equilibrium at late times is a challenge for theory. The experiments seem to indicate early thermalization whereas the present theoretical understanding of QCD suggests a much longer thermal equilibra ...
IMPRECISE MEASUREMENTS IN QUANTUM MECHANICS
... Quantum theory has shown that measurements need also theoretical examination. Soon after the birth of quantum theory the deep nature of the theoretical issues related to measurements were generally recognized. It became clear that the concept of measurement is not at all innocuous, and an extensive ...
... Quantum theory has shown that measurements need also theoretical examination. Soon after the birth of quantum theory the deep nature of the theoretical issues related to measurements were generally recognized. It became clear that the concept of measurement is not at all innocuous, and an extensive ...
TOPICS IN QUANTUM NANOSTRUCTURE PHYSICS: SPIN-ORBIT EFFECTS AND FAR-INFRARED RESPONSE TEMES DE F´
... Ground state and dipole response of quantum ring systems Because of their particular topology, quantum ring (QR) systems exhibit unique physical phenomena that make them very interesting from both a purely theoretical and a technological point of view. In this sense they allow, for example, the obse ...
... Ground state and dipole response of quantum ring systems Because of their particular topology, quantum ring (QR) systems exhibit unique physical phenomena that make them very interesting from both a purely theoretical and a technological point of view. In this sense they allow, for example, the obse ...
BARRIER PENETRATION AND INSTANTONS J. ZINN - IPhT
... been noticed that, formally, barrier penetration has a semi-classical interpretation in terms of classical particles moving in imaginary time (see the discussion at the end of section 1.1). The Euclidean formalism based on calculating the density matrix at thermal equilibrium e−βH , describes formal ...
... been noticed that, formally, barrier penetration has a semi-classical interpretation in terms of classical particles moving in imaginary time (see the discussion at the end of section 1.1). The Euclidean formalism based on calculating the density matrix at thermal equilibrium e−βH , describes formal ...
The Integer Quantum Hall Effect
... Equipotentials which stretch from one side of a sample to another are relatively rare but exist on the edge of the sample. The states at the far edge of a band (either of high or low energy) are localized. Only states close to the center of the band are extended. Since the localized states cannot co ...
... Equipotentials which stretch from one side of a sample to another are relatively rare but exist on the edge of the sample. The states at the far edge of a band (either of high or low energy) are localized. Only states close to the center of the band are extended. Since the localized states cannot co ...
Quantum Field Theory - Uwe
... per space point. The scalar Higgs field φa (~x) (with a ∈ {1, 2}) in the standard model is a complex doublet, i.e. it has four real degrees of freedom per space point. An Abelian gauge field Ai (~x) (with a spatial direction index i ∈ {1, 2, 3}) — for example, the photon field in electrodynamics — i ...
... per space point. The scalar Higgs field φa (~x) (with a ∈ {1, 2}) in the standard model is a complex doublet, i.e. it has four real degrees of freedom per space point. An Abelian gauge field Ai (~x) (with a spatial direction index i ∈ {1, 2, 3}) — for example, the photon field in electrodynamics — i ...
Popper`s Paradoxical Pursuit of Natural Philosophy
... pursued as a part of natural philosophy, seeks to enhance our knowledge and understanding of that aspect of the world that lies behind what can be observed, in terms of which observable phenomena can be explained and understood. It commits physics to attempting “to grasp reality as it is thought ind ...
... pursued as a part of natural philosophy, seeks to enhance our knowledge and understanding of that aspect of the world that lies behind what can be observed, in terms of which observable phenomena can be explained and understood. It commits physics to attempting “to grasp reality as it is thought ind ...