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Speculations on the Union of Science and Religion
Speculations on the Union of Science and Religion

Title Robustness of quantum spin Hall effect in an external magnetic
Title Robustness of quantum spin Hall effect in an external magnetic

... couplings. This is reasonable for QSHE materials with small g factors. Furthermore, due to the absence of spin-flip (e.g., Rashba-like spin-orbital coupling) terms, the physical spin Sz is preserved and the system can be decoupled into two components with opposite Sz . This makes the two spindepende ...
Are quantum particles objects? - General Guide To Personal and
Are quantum particles objects? - General Guide To Personal and

... where '; ; are 1 particle vectors. Pretty evidently, it does not specify which particle is in which state - there is no such determinate rule here. It is like the symmetrized triadic ‘the …rst particle is in the state ‘const. '’ the second in the state ‘const. ’, the third in the state ‘const. ’, or ...
Spin relaxation in quantum dots with random spin
Spin relaxation in quantum dots with random spin

... transistors,16 the SO coupling constants typically range from 10−10 to 10−9 eV cm. It is important to mention that by applying an external bias across the quantum well, it is possible to manipulate the magnitude of ␣ in InGaAs/ InAlAs-based17 and GaAs/ AlAs-based18–20 systems and even change its sig ...
PPT
PPT

... exact compensation missing in the relativistic “quark spin” no matter what quark model is used. • one must use the right combination otherwise will misunderstand the nucleon spin structure. ...
Quantum Computational Renormalization in the - IAP TU
Quantum Computational Renormalization in the - IAP TU

... reversed in the swapped term, and the action on the logical state is instead (σx Rz (θ))σx = Rz (−θ). Interference of the two terms reduces the fidelity of the rotation. This picture suggests a variation of the measurement sequences for logical gates which would mitigate the effects of these short-r ...
Spin Algebra, Spin Eigenvalues, Pauli Matrices Lecture 10
Spin Algebra, Spin Eigenvalues, Pauli Matrices Lecture 10

Antiferromagnetic resonance in frustrated system Ni5(TeO3)4Br2
Antiferromagnetic resonance in frustrated system Ni5(TeO3)4Br2

spin squeezing and quantum entanglement in interaction
spin squeezing and quantum entanglement in interaction

Radiation reaction in ultrarelativistic laser
Radiation reaction in ultrarelativistic laser

Indistinguishable Particles in Quantum Mechanics: An Introduction
Indistinguishable Particles in Quantum Mechanics: An Introduction

Holographic Metals and the Fractionalized Fermi
Holographic Metals and the Fractionalized Fermi

... the dk propagator should acquire a singular k dependence in finite dimensions. However, the remarkable emergence of the large dimension SY state in the very different holographic context suggests a certain robustness, and so perhaps it should be taken seriously as a description over a wide range of ...
Fulltext PDF - Indian Academy of Sciences
Fulltext PDF - Indian Academy of Sciences

Single-photon sources based on NV
Single-photon sources based on NV

SDW`s
SDW`s

Abstracts_Advanced_Workshop_Sibiu_2009
Abstracts_Advanced_Workshop_Sibiu_2009

... We study the spin edge states, induced by the combined effect of spin-orbit interaction (SOI) and nonhomogeneous magnetic field, exposed perpendicularly to one- and two-dimensional electron systems. We calculate analytically the spectrum of the spin edge states (the spin snakes and cycloid-orbits) i ...
Spin quantum computation in silicon nanostructures
Spin quantum computation in silicon nanostructures

Spin Angular Momentum and the Dirac Equation
Spin Angular Momentum and the Dirac Equation

... The divergence of displacement is ∂x ax + ∂y ay = 2(cos ϕ − 1), which is not zero in general. The theory of elastic waves could be improved by including higher-order deriatives, [8] but this does not solve the fundamental limitation to small displacements. Instead we use a different approach based on ...
LHCC
LHCC

Flat spin connections in the Teleparallel equivalent of General
Flat spin connections in the Teleparallel equivalent of General

Quantum Criticality: competing ground states in low
Quantum Criticality: competing ground states in low

... the quantum critical point in Fig 3. We take this as evidence that the high temperature superconductors are near a quantum critical point whose spin sector has universal properties closely related to that of HL [18]: a specific microscopic calculation, involving competition between the states to be ...
m NV Centers in Quantum Information Technology ! De-Coherence Protection &
m NV Centers in Quantum Information Technology ! De-Coherence Protection &

... uantum control pulses and NV centers appear as y level diagrams of the NV center electron spin agnetic field splits the NV spin triplet electronic d by the spin sublevels mS = 0 (labeled j0〉) and NV1. For the pulsed experiments, the same Rabi ...
Chapter 3 The Statistical Theory of Thermodynamics 3.1 Macrostate
Chapter 3 The Statistical Theory of Thermodynamics 3.1 Macrostate

... e.g., the ideal spin-1/2 paramagnet. At each of N sites we have an atom with spin S = 1/2. By quantum mechanics, the z-component has only 2 values: Sz = −1/2 for down-state (↓) and Sz = 1/2 for up-state (↑). If we apply a magnetic field B in the z-direction, each spin has a magnetic moment −µ0 (↓) o ...
Optimal frequency measurements with maximally correlated states
Optimal frequency measurements with maximally correlated states

... which is N times greater than for a single particle. However, because ^ C M u JW u C M & 50, some operator other than J z must be detected after the final p/2 pulse. Consider the operator Õ5 ) Ni51 s z i , where s z i is the z Pauli spin matrix for the ith atom. For J5N/2 this operator is diagonal ...
Electrically Controlled Nuclear Spin Polarization and Relaxation by
Electrically Controlled Nuclear Spin Polarization and Relaxation by

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Spin (physics)

In quantum mechanics and particle physics, spin is an intrinsic form of angular momentum carried by elementary particles, composite particles (hadrons), and atomic nuclei.Spin is one of two types of angular momentum in quantum mechanics, the other being orbital angular momentum. The orbital angular momentum operator is the quantum-mechanical counterpart to the classical notion of angular momentum: it arises when a particle executes a rotating or twisting trajectory (such as when an electron orbits a nucleus). The existence of spin angular momentum is inferred from experiments, such as the Stern–Gerlach experiment, in which particles are observed to possess angular momentum that cannot be accounted for by orbital angular momentum alone.In some ways, spin is like a vector quantity; it has a definite magnitude, and it has a ""direction"" (but quantization makes this ""direction"" different from the direction of an ordinary vector). All elementary particles of a given kind have the same magnitude of spin angular momentum, which is indicated by assigning the particle a spin quantum number.The SI unit of spin is the joule-second, just as with classical angular momentum. In practice, however, it is written as a multiple of the reduced Planck constant ħ, usually in natural units, where the ħ is omitted, resulting in a unitless number. Spin quantum numbers are unitless numbers by definition.When combined with the spin-statistics theorem, the spin of electrons results in the Pauli exclusion principle, which in turn underlies the periodic table of chemical elements.Wolfgang Pauli was the first to propose the concept of spin, but he did not name it. In 1925, Ralph Kronig, George Uhlenbeck and Samuel Goudsmit at Leiden University suggested a physical interpretation of particles spinning around their own axis. The mathematical theory was worked out in depth by Pauli in 1927. When Paul Dirac derived his relativistic quantum mechanics in 1928, electron spin was an essential part of it.
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