Conversion of Spin into Directed Electric Current in Quantum Wells
... of the spin selection rules the direction of the current is determined by the helicity of the light and can be reversed by switching the helicity from right to left handed. A microscopic model is presented which describes the origin of the photon helicity driven current. The model suggests that the ...
... of the spin selection rules the direction of the current is determined by the helicity of the light and can be reversed by switching the helicity from right to left handed. A microscopic model is presented which describes the origin of the photon helicity driven current. The model suggests that the ...
V. Semiclassical theory of light-matter interactions Classical and
... which can be expressed in this manner by using any complete orthonormal set of state vectors. This form of the identity operator (which is also Hermitian) is very useful for finding series expansions for products of operators and vectors. ...
... which can be expressed in this manner by using any complete orthonormal set of state vectors. This form of the identity operator (which is also Hermitian) is very useful for finding series expansions for products of operators and vectors. ...
Quantum-information transport to multiple receivers
... quantum information transfer usually exploits teleportation 关2兴, or flying qubits 关3兴; we consider a mechanism more related to a quantum wire or fanout. Fanout operations are forbidden quantum mechanically, as they necessarily imply cloning, however, considering the closest quantum analog leads to a ...
... quantum information transfer usually exploits teleportation 关2兴, or flying qubits 关3兴; we consider a mechanism more related to a quantum wire or fanout. Fanout operations are forbidden quantum mechanically, as they necessarily imply cloning, however, considering the closest quantum analog leads to a ...
Chapter 3
... to have been an inspired afterthought, Schrödinger took the trouble to see what he could make of a non-relativistic treatment. Again the wave equation seems to have been a matter of conjecture. Having got it, by whatever means, he found he could evaluate the eigenvalues; he found them to reproduce t ...
... to have been an inspired afterthought, Schrödinger took the trouble to see what he could make of a non-relativistic treatment. Again the wave equation seems to have been a matter of conjecture. Having got it, by whatever means, he found he could evaluate the eigenvalues; he found them to reproduce t ...
+l.
... Exclusion principle and the periodic table 42.7 The exclusion principle and the periodic table The four quantum numbers, n, l, ml, ms can be used to describe all the electronic states of an atom regardless of the number of electrons in its structure. Question: How many electrons can be in a particul ...
... Exclusion principle and the periodic table 42.7 The exclusion principle and the periodic table The four quantum numbers, n, l, ml, ms can be used to describe all the electronic states of an atom regardless of the number of electrons in its structure. Question: How many electrons can be in a particul ...
Quantum Information
... follows: We have (at least) two different experimental stations where we have done measurements on two systems which are entangled with each other. Then, perfect correlations exist between the measurement results on both sides, even as each individual measurement result is completely random. So the ...
... follows: We have (at least) two different experimental stations where we have done measurements on two systems which are entangled with each other. Then, perfect correlations exist between the measurement results on both sides, even as each individual measurement result is completely random. So the ...
Lenz vector operations on spherical hydrogen atom
... It is well-known that the Kepler/Coulomb potentials endow planetary orbits and hydrogen atoms with special properties which are not present in systems subject to other central potentials. For example, a pure Keplerian orbit does not precess. Moreover, the total energy of the system depends only on t ...
... It is well-known that the Kepler/Coulomb potentials endow planetary orbits and hydrogen atoms with special properties which are not present in systems subject to other central potentials. For example, a pure Keplerian orbit does not precess. Moreover, the total energy of the system depends only on t ...
Δk/k
... with spin opposite to its direction of flight z'. The angular distibution of light from an excited aligned atom without polarization analysis then is the incoherent sum of both: W (θ ) W (θ ) W (θ ) 14 I 0 (1 cos θ ) 2 14 I 0 (1 cos θ ) 2 , or: W (θ ) 12 I 0 (1 cos 2 θ ) , which ...
... with spin opposite to its direction of flight z'. The angular distibution of light from an excited aligned atom without polarization analysis then is the incoherent sum of both: W (θ ) W (θ ) W (θ ) 14 I 0 (1 cos θ ) 2 14 I 0 (1 cos θ ) 2 , or: W (θ ) 12 I 0 (1 cos 2 θ ) , which ...
Quantum Interference 3 Claude Cohen-Tannoudji Scott Lectures Cambridge, March 9
... This result can be extended to any quantum device which could be introduced for determining the path of the atom. If the device is efficient, i.e. if its two final states are different, the interference fringes disappear. One cannot observe fringes and simultaneously know the path of the atom Illust ...
... This result can be extended to any quantum device which could be introduced for determining the path of the atom. If the device is efficient, i.e. if its two final states are different, the interference fringes disappear. One cannot observe fringes and simultaneously know the path of the atom Illust ...
Packard Poster-2 - Northwestern University Mesoscopic Physics
... mechanically entangled exhibit novel behavior that violates many of our classical intuitions. The exploitation of entangled quantum objects is at the heart of a number of recently developed subfields in physics – quantum computation, quantum cryptography, quantum information, etc. Perhaps the simple ...
... mechanically entangled exhibit novel behavior that violates many of our classical intuitions. The exploitation of entangled quantum objects is at the heart of a number of recently developed subfields in physics – quantum computation, quantum cryptography, quantum information, etc. Perhaps the simple ...
Bell's theorem
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Bell's theorem is a ‘no-go theorem’ that draws an important distinction between quantum mechanics (QM) and the world as described by classical mechanics. This theorem is named after John Stewart Bell.In its simplest form, Bell's theorem states:Cornell solid-state physicist David Mermin has described the appraisals of the importance of Bell's theorem in the physics community as ranging from ""indifference"" to ""wild extravagance"". Lawrence Berkeley particle physicist Henry Stapp declared: ""Bell's theorem is the most profound discovery of science.""Bell's theorem rules out local hidden variables as a viable explanation of quantum mechanics (though it still leaves the door open for non-local hidden variables). Bell concluded:Bell summarized one of the least popular ways to address the theorem, superdeterminism, in a 1985 BBC Radio interview: