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Cavity QED
Cavity QED

... • Photon detection: PBS and single photon counters • Photon rotation: waveplates ...
Chapter 28
Chapter 28

... chapter that we defined momentum as the product of mass and velocity. But a photon has no mass. It turns out that in quantum physics, photons do have momentum which is inversely proportional to its wavelength. The equation for the momentum of a photon is h p ...
LS coupling
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... subspace to be states with well defined quantum numbers L, S, Ml and Ms , we should be fine. So the net effect of the perturbation is to split the configurations into terms of well defined L and S. These terms are still degenerate with respect to Ml and Ms , as there is no preferred direction for th ...
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... in which the authors present quantum information and computation systems. This is both a thorough and detailed book, and one which is very interesting and easy to read. It is remarkable that even a reader with a good understanding of selected topics of quantum information and computation may still f ...
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Optically polarized atoms_ch_2

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amu (atomic mass unit): a unit used to express very small masses

... Niels Bohr's ideas of electron distribution within the atom are useful concepts and laid the foundation for much of the later progress in understanding atomic structure. But, as is the case with many theories, Bohr's assumptions have had to be modified. Difficulty arose in applying the theory to at ...
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10 Quantum Complexity Theory I - Department of Computer Science

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Colloquium on "Many Worlds Interpretation"

... Schrödinger equation) that is compatible with the way the world is perceived. However, because of quantum non-locality it requires an appropriate modification of the traditional epistemological postulate of psycho-physical parallelism. In this interpretation, the physical world is completely describ ...
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... with the rest of the universe,” explains Schnabel. But they are closely connected with each other, which manifests itself in their entanglement. “It’s as if the two particles know only of each other in the beginning,” says Schnabel. A variety of external forces gradually begin to act on them and thu ...
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... A) You can determine if the ship is moving by determining the apparent velocity of light. B) You can determine if the ship is moving by checking your precision time piece. If it's running slow, the ship is moving. C) You can determine if the ship is moving either by determining the apparent velocity ...
Continuity Equation
Continuity Equation

... Excess carriers in s/c cause non-equilibrium condition, where most of s/c devices operate under this circumstances. Carriers may be generated by: forward-bias of p-n junction, incident light, and impact ionization. Continuity equation – the governing equation for the rate of charge carriers. Thermio ...
kinematics, units, etc
kinematics, units, etc

... ➁ A Lorentz transformation along an arbitrary direction in space to another frame with parallel axes is often called a boost. ➂ Components of a 4-vector transverse to the boost direction do not change under a Lorentz transformation. Sometimes we will use the notation pT and pL to refer to the transv ...
Section 8: Electronic Transport
Section 8: Electronic Transport

... between the two consecutive scattering events. It known as, the collision time (relaxation time), it plays a fundamental role in the theory of metallic conduction. It follows from this assumption that an electron picked at random at a given moment will, on the average, travel for a time τ before its ...
Quantum Physics 2005 Notes-4 The Schrodinger Equation (Chapters 6 + 7)
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... The general solution vs the specific case The free particle wave -2 • There are an infinite number of possible solutions to the free space Schrodinger equation. All we have found is the relation between the possible time solutions and the possible space solutions. • We need to give more information ...
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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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