- Quantum Optics and Spectroscopy
... the laser. Based on an analysis of the exchange of energy between atoms and thermal radiation, Einstein already discovered the effect of stimulated emission in 1917. It took around 40 years until the concept of light amplification by stimulated emission radiation was realized with a ruby laser by Th ...
... the laser. Based on an analysis of the exchange of energy between atoms and thermal radiation, Einstein already discovered the effect of stimulated emission in 1917. It took around 40 years until the concept of light amplification by stimulated emission radiation was realized with a ruby laser by Th ...
The LPM effect in sequential bremsstrahlung
... The same photon can originate from different scatterings within the formation time, and These different possibilities then interfere quantum mechanically and reduce the bremsstrahlung rate from the naive expectation. This reduction in bremsstrahlung rate is called the Landau-Pomeranchuk-Migdal (LPM) ...
... The same photon can originate from different scatterings within the formation time, and These different possibilities then interfere quantum mechanically and reduce the bremsstrahlung rate from the naive expectation. This reduction in bremsstrahlung rate is called the Landau-Pomeranchuk-Migdal (LPM) ...
Spin Interactions Between Conduction Electrons and
... nuclei and of partially filled electronic shells of impurity atoms. Nuclear spin polarizations are addressed through the contact hyperfine interaction resulting in the development of a method for high-field optically detected nuclear magnetic resonance sensitive to 108 nuclei. This interaction is th ...
... nuclei and of partially filled electronic shells of impurity atoms. Nuclear spin polarizations are addressed through the contact hyperfine interaction resulting in the development of a method for high-field optically detected nuclear magnetic resonance sensitive to 108 nuclei. This interaction is th ...
An Introduction to the Standard Model
... For most wave fields (for example, sound waves or the vibrations of strings and membranes) such a description is an idealization which is valid for distances larger than the characteristic lenght which measures the granularity of the medium (the air for sound waves). For smaller distances these the ...
... For most wave fields (for example, sound waves or the vibrations of strings and membranes) such a description is an idealization which is valid for distances larger than the characteristic lenght which measures the granularity of the medium (the air for sound waves). For smaller distances these the ...
Theoretical and observational consistency of Massive Gravity
... a graviton mass within the ghost-free theory of massive gravity, the de Rham-Gabadadze-Tolley (dRGT) theory, which incorporates a 2parameter family of potentials. In this thesis we pursue to test the physical viability of the theory. To start with, we have put constraints on the parameters of the th ...
... a graviton mass within the ghost-free theory of massive gravity, the de Rham-Gabadadze-Tolley (dRGT) theory, which incorporates a 2parameter family of potentials. In this thesis we pursue to test the physical viability of the theory. To start with, we have put constraints on the parameters of the th ...
Endomorphism Bialgebras of Diagrams and of Non
... construct explicit examples of such and check all the necessary properties. This gets even more complicated if we have to verify that something like a comodule algebra over a bialgebra is given. Bialgebras and comodule algebras, however, arise in a very natural way in non-commutative geometry and in ...
... construct explicit examples of such and check all the necessary properties. This gets even more complicated if we have to verify that something like a comodule algebra over a bialgebra is given. Bialgebras and comodule algebras, however, arise in a very natural way in non-commutative geometry and in ...
Design, Fabrication and Characterization of a Suspended Heterostructure Vincent Louis Philippe Leduc
... resonators with embedded two-dimensional electron gas (2DEG) can be made. The mechanical characteristics of the resonator and the piezoelectric actuation scheme are investigated using finite-element modeling. For a 836 nm-long, 250 nm-wide and 164 nm-thick beam with gold electrodes on top, out-of-pl ...
... resonators with embedded two-dimensional electron gas (2DEG) can be made. The mechanical characteristics of the resonator and the piezoelectric actuation scheme are investigated using finite-element modeling. For a 836 nm-long, 250 nm-wide and 164 nm-thick beam with gold electrodes on top, out-of-pl ...
Lecture Notes for Physics 229: Quantum Information and Computation
... on the nature of information? It must have been clear already in the early days of quantum theory that classical ideas about information would need revision under the new physics. For example, the clicks registered in a detector that monitors a radioactive source are described by a truly random Pois ...
... on the nature of information? It must have been clear already in the early days of quantum theory that classical ideas about information would need revision under the new physics. For example, the clicks registered in a detector that monitors a radioactive source are described by a truly random Pois ...
Electron transport, interaction and spin in graphene and graphene nanoribbons Artsem Shylau
... electronic properties which make this material interesting for both theoreticians, experimentalists and engineers. One of the most important feature of graphene is its linear energy spectrum. This kind of spectrum is known from high-energy physics where it corresponds to massless particles like neut ...
... electronic properties which make this material interesting for both theoreticians, experimentalists and engineers. One of the most important feature of graphene is its linear energy spectrum. This kind of spectrum is known from high-energy physics where it corresponds to massless particles like neut ...
S-Matrix Analysis of Vibrational and Alignment Effects in Intense
... transitions. These approaches go beyond the traditional perturbation theory, as they do not rely on one interaction being only of perturbative influence as compared to the other interaction. As such it can explain processes that are occurring in a domain where for this reason perturbation theory bre ...
... transitions. These approaches go beyond the traditional perturbation theory, as they do not rely on one interaction being only of perturbative influence as compared to the other interaction. As such it can explain processes that are occurring in a domain where for this reason perturbation theory bre ...
Atom-Photon Entanglement - Experimental Quantum Physics
... ”Those who are not shocked when they first come across quantum mechanics cannot possibly have understood it.”, is a statement of Niels Bohr and expresses the attitude of many physicists in the early days of quantum mechanics towards the then new theory. Especially non-separable two- (or many-) parti ...
... ”Those who are not shocked when they first come across quantum mechanics cannot possibly have understood it.”, is a statement of Niels Bohr and expresses the attitude of many physicists in the early days of quantum mechanics towards the then new theory. Especially non-separable two- (or many-) parti ...
Possible large-N fixed-points and naturalness for O(N) scalar fields
... must be fine-tuned to cancel the radiative correction. We mentioned mH is O() or mbare H the difficulties with a large mH. A way out is for to be relatively small, but then what replaces λφ 4 beyond ? One may argue that regulators must be sent to limiting values before making physical conclusion ...
... must be fine-tuned to cancel the radiative correction. We mentioned mH is O() or mbare H the difficulties with a large mH. A way out is for to be relatively small, but then what replaces λφ 4 beyond ? One may argue that regulators must be sent to limiting values before making physical conclusion ...
Superposition, Entanglement, and Raising Schrödinger’s Cat Nobel Lecture, December 8, 2012
... optical pumping was (and still is) not feasible because of the short wavelengths required. Therefore, in a heroic set of experiments, state preparation was accomplished through charge exchange with a polarized Cs beam that passed through the ions. Detection was accomplished through a charge-transfer ...
... optical pumping was (and still is) not feasible because of the short wavelengths required. Therefore, in a heroic set of experiments, state preparation was accomplished through charge exchange with a polarized Cs beam that passed through the ions. Detection was accomplished through a charge-transfer ...
Basic Notions of Quantum Network Science
... Bob can treat his first EPR (shared with Alice) as the state to be teleported to Carol. He measures it as before, calls Carol and Carol does his measurement. The final state that Carol has is half of the EPR pair with Alice. ...
... Bob can treat his first EPR (shared with Alice) as the state to be teleported to Carol. He measures it as before, calls Carol and Carol does his measurement. The final state that Carol has is half of the EPR pair with Alice. ...
Optical Two-Dimensional Fourier Transform Spectroscopy of
... but surpassing, traditional FWM techniques is a promising tool to address these problems. As an optical analog of multidimensional nuclear magnetic resonance (NMR) spectroscopy [8], 2D FTS has been implemented for probing the vibrational and electronic states of molecular systems in the infrared (IR ...
... but surpassing, traditional FWM techniques is a promising tool to address these problems. As an optical analog of multidimensional nuclear magnetic resonance (NMR) spectroscopy [8], 2D FTS has been implemented for probing the vibrational and electronic states of molecular systems in the infrared (IR ...
Coupling-Matrix Approach to the Chern Number Calculation in
... In the past thirty years, the condensed matter physics community has been fascinated by topological phases of matter, for instance, the integer quantum Hall effect, [1] the fractional quantum Hall effect, [2] the quantum anomalous Hall effect, [3] the quantum spin Hall effect, [4, 5] and the three-d ...
... In the past thirty years, the condensed matter physics community has been fascinated by topological phases of matter, for instance, the integer quantum Hall effect, [1] the fractional quantum Hall effect, [2] the quantum anomalous Hall effect, [3] the quantum spin Hall effect, [4, 5] and the three-d ...
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.