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Quantum Computing - Turing Gateway
Quantum Computing - Turing Gateway

... (a|0>+b|1>) (c|0>+d|1>) … (p|0>+q|1>) only 2n parameters!! “The whole is greater than the sum of the parts!” Rich further quantum correlations amongst the separate qubits (“they are entangled”) described by the extra parameters. ...
Magnetic order in nuclear spin two-dimensional lattices due to electron–electron interactions
Magnetic order in nuclear spin two-dimensional lattices due to electron–electron interactions

... where Gs ¼ Um=4p is the bare 2kF backscattering vertex and m the effective mass. We emphasise the non-analytic behaviour on the modulus q ¼ jqj, which cannot be derived within a standard Fermi liquid theory. This linear jqj dependence is indeed the necessary dependence for a nuclear ferromagnet as ...
The Quantum Puzzle: Critique of Quantum Theory and
The Quantum Puzzle: Critique of Quantum Theory and

Bohr Theory in the Atomic Physics
Bohr Theory in the Atomic Physics

... electrodynamics would not be the same with the interior of the atom, and on the other hand, when Bohr studied the atom, he still regarded the electron as one classical particle, and continued to use the coordinate, speed, orbit and other concepts which were used to describe the macro phenomena in th ...
F - The University of Sydney
F - The University of Sydney

... The continuum component is produced when the electrons are rapidly decelerated by close encounters with nuclei in the target material. They are decelerated and radiate. (1 mark) (b) The continuum component is independent of the target material, so it will not change. (1 mark) (c) The electrons incid ...
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if on the Internet, press on your browser to

arXiv:hep-th/0006105v1 15 Jun 2000 Quotient Construction of `t
arXiv:hep-th/0006105v1 15 Jun 2000 Quotient Construction of `t

... with respect to a deterministic evolution.’t Hooft’s solution to this problem is as follows. He argued that two Planck scale states are equivalent at the atomic scale if , after some finite time interval, they evolve into the same state. This leads to a natural definition of equivalence classes: two ...
n T - Noise Lab
n T - Noise Lab

... Assume the emission and capture coefficients remains equal to their equilibrium value under non-equilibrium conditions, then ...
A two-dimensional, two-electron model atom in a laser pulse: exact
A two-dimensional, two-electron model atom in a laser pulse: exact

Secondary Electron Trajectories in Scanning Tunneling Microscopy
Secondary Electron Trajectories in Scanning Tunneling Microscopy

Quantum-confined Stark effect at 1.3 µm in Ge/SiGe quantum
Quantum-confined Stark effect at 1.3 µm in Ge/SiGe quantum

... The absorption spectra obtained from this method is reported in figure (2). As a consequence of the confinement effect in the MQW and the strain between Ge in QW and the VS, a shift of absorption edge from 0.8eV for bulk Ge to 0.96eV is clearly observed. At low reverse bias (-1V is used in order to ...
Superconducting phase qubit coupled to a nanomechanical resonator:
Superconducting phase qubit coupled to a nanomechanical resonator:

... Ⰶ ␻0 / Q and g Ⰶ ⌬⑀. However, the resonant Rabi frequency, which is proportional to g, is then much smaller than the qubit frequency ⌬⑀ / ប. Therefore, restricting g to be in the simpler weak-coupling regime leads to quantum information processing that is slower than necessary, allowing fewer operat ...
On High-Efficiency Optical Communication and Key Distribution
On High-Efficiency Optical Communication and Key Distribution

... separation (thus large apertures), or the use of highorder orthogonal beams that are difficult to produce and degrade easily over poor atmospheric conditions. In Section III we propose to solve this problem using simple dense (thus non-orthogonal) Gaussian beams; by using spatial PPM modulation, int ...
On High-Efficiency Optical Communication and Key Distribution
On High-Efficiency Optical Communication and Key Distribution

... separation (thus large apertures), or the use of highorder orthogonal beams that are difficult to produce and degrade easily over poor atmospheric conditions. In Section III we propose to solve this problem using simple dense (thus non-orthogonal) Gaussian beams; by using spatial PPM modulation, int ...
Mutually exclusive and exhaustive quantum states
Mutually exclusive and exhaustive quantum states

Light Control using Organometallic Chromophores Johan Henriksson Link¨
Light Control using Organometallic Chromophores Johan Henriksson Link¨

... As mentioned above, our part in this foi coordinated project is to provide theoretical simulations of molecular properties. In order to contribute, high quality calculations are needed, but as heavy elements are often a part of the molecules considered, relativistic effects needs to be accounted for ...
ARPES experiments on 3D topological insulators
ARPES experiments on 3D topological insulators

Introduction - Wave Structure of Matter (WSM)
Introduction - Wave Structure of Matter (WSM)

Insertion Devices Lecture 2 Wigglers and Undulators
Insertion Devices Lecture 2 Wigglers and Undulators

Superfluid to insulator transition in a moving system of
Superfluid to insulator transition in a moving system of

... space and time enter equivalently ...
Generation of nonclassical states from thermal radiation
Generation of nonclassical states from thermal radiation

Optical Receiver Operation
Optical Receiver Operation

... efficiency and producing no dark current, it is possible to find the minimum received optical power required for a specific BER performance in a digital system. • This minimum received power level is known as the quantum limit. • Assume that an optical pulse of energy E falls on the photo-detector i ...
1.1 Nature of X-rays
1.1 Nature of X-rays

... that it is better to use tungsten or gold with atomic number Z at the target, increase accelerating voltage V , and draw larger current i as it corresponds to the number of electrons that collide with the target in unit time. It may be noted that most of the kinetic energy of the electrons striking ...
Control of quantum systems using model
Control of quantum systems using model

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Quantum electrodynamics



In particle physics, quantum electrodynamics (QED) is the relativistic quantum field theory of electrodynamics. In essence, it describes how light and matter interact and is the first theory where full agreement between quantum mechanics and special relativity is achieved. QED mathematically describes all phenomena involving electrically charged particles interacting by means of exchange of photons and represents the quantum counterpart of classical electromagnetism giving a complete account of matter and light interaction.In technical terms, QED can be described as a perturbation theory of the electromagnetic quantum vacuum. Richard Feynman called it ""the jewel of physics"" for its extremely accurate predictions of quantities like the anomalous magnetic moment of the electron and the Lamb shift of the energy levels of hydrogen.
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