Coherent and incoherent evolution of qubits in
... •Control coupling of qubits without presence of nearby electrodes and associated electromagnetic fluctuations; ...
... •Control coupling of qubits without presence of nearby electrodes and associated electromagnetic fluctuations; ...
NIU Physics PhD Candidacy Exam - Spring 2017 Quantum Mechanics
... c) Find the polarizability of the oscillator in these eigenstates. The polarizability, α, determines the mean dipole moment, p = αE, induced by the weak external electric field in an isotropic system. It can also be expressed as the negative second derivative of the energy with respect to the electr ...
... c) Find the polarizability of the oscillator in these eigenstates. The polarizability, α, determines the mean dipole moment, p = αE, induced by the weak external electric field in an isotropic system. It can also be expressed as the negative second derivative of the energy with respect to the electr ...
Journal of Materials for optical and electronic devices www.rsc.org/MaterialsC
... the electronic states of the respective 4f conguration.12 The 4f electrons are shielded quite effectively from the effects of the surrounding charges in a solid by the outer 5s and 5p orbitals, which reduces electron-phonon coupling and leads to spectrally narrow transitions and high quantum efficiency ...
... the electronic states of the respective 4f conguration.12 The 4f electrons are shielded quite effectively from the effects of the surrounding charges in a solid by the outer 5s and 5p orbitals, which reduces electron-phonon coupling and leads to spectrally narrow transitions and high quantum efficiency ...
Oxygen in barium fluoride - Physics
... shell-model regions, neglecting correlation and spin projection. These minimizations are very time consuming, since the manifold of variables $ a i (k),d i (k) % is multidimensional and the dependence on $ a i (k) % is nonlinear. For each choice of values of $ a i (k),d i (k) % , the full SCF soluti ...
... shell-model regions, neglecting correlation and spin projection. These minimizations are very time consuming, since the manifold of variables $ a i (k),d i (k) % is multidimensional and the dependence on $ a i (k) % is nonlinear. For each choice of values of $ a i (k),d i (k) % , the full SCF soluti ...
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... transition from a classical thermal gas to a quantum degenerate Bose-Einstein condensate occurs when the phase space density, ρ = nλ3dB is increased to ∼ 1, where n is the number density of particles per unit volume and λdB is the thermal de Broglie wavelength [5] of the atoms. In quantum mechanica ...
... transition from a classical thermal gas to a quantum degenerate Bose-Einstein condensate occurs when the phase space density, ρ = nλ3dB is increased to ∼ 1, where n is the number density of particles per unit volume and λdB is the thermal de Broglie wavelength [5] of the atoms. In quantum mechanica ...
Above-threshold ionization in a strong dc electric field
... a static electric plus strong IR field. In the conceptually simplest calculation 共model A兲 the initial conditions of the electron were sampled randomly so that the classical distribution had the same total energy and the same spatial distribution as the initial quantum state. The classical equations ...
... a static electric plus strong IR field. In the conceptually simplest calculation 共model A兲 the initial conditions of the electron were sampled randomly so that the classical distribution had the same total energy and the same spatial distribution as the initial quantum state. The classical equations ...
Simultaneous optical trapping and detection of atoms by microdisk
... atomic density matrix can be found. In the limit of low atomic saturation, the steady-state 3 ⫻ 3 density matrix may be approximated by a direct product of the 2 ⫻ 2 matrices for the two atomic transitions independently. The optical potential is then found as the sum of two terms given by Eq. 共10兲 c ...
... atomic density matrix can be found. In the limit of low atomic saturation, the steady-state 3 ⫻ 3 density matrix may be approximated by a direct product of the 2 ⫻ 2 matrices for the two atomic transitions independently. The optical potential is then found as the sum of two terms given by Eq. 共10兲 c ...
Coupling between Internal Spin Dynamics and External
... of these systems is uncontrolled noise-induced transitions ...
... of these systems is uncontrolled noise-induced transitions ...
Coherence of atomic matter-wave fields - IAP TU
... properties of the atoms, or center-of-mass properties, or both. Measurements may or may not remove atoms from the field, hence the role of the annihilation operator is not as central as for light fields. Due to the added complexity of that situation as compared to the optical case, no unified theory ...
... properties of the atoms, or center-of-mass properties, or both. Measurements may or may not remove atoms from the field, hence the role of the annihilation operator is not as central as for light fields. Due to the added complexity of that situation as compared to the optical case, no unified theory ...
Novel Results for Condensed Matter Systems with Time Reversal Symmetry
... regime of Coulomb Blockade [10]. The fact that superconductivity is associated with breaking of particle number conservation hints at the idea that in mesoscopic systems superconductivity can quite different from that of bulk systems. In this work we focus on extreme case of the so-called zerodimens ...
... regime of Coulomb Blockade [10]. The fact that superconductivity is associated with breaking of particle number conservation hints at the idea that in mesoscopic systems superconductivity can quite different from that of bulk systems. In this work we focus on extreme case of the so-called zerodimens ...
Dimers on the triangular kagome lattice "
... The nontrivial statistical mechanics problem of dimer coverings of lattices, which may be used to model, e.g., the adsorption of diatomic molecules onto a surface,1 experienced a renaissance with the discovery of exact mappings to Ising models.2,3 A second renaissance came with the search for4,5 and ...
... The nontrivial statistical mechanics problem of dimer coverings of lattices, which may be used to model, e.g., the adsorption of diatomic molecules onto a surface,1 experienced a renaissance with the discovery of exact mappings to Ising models.2,3 A second renaissance came with the search for4,5 and ...
1. Structure of Matter
... crowd together as they converge toward the series limit which corresponds to ionization of the atom and is observed as the beginning of the continuum emission. Note that the ionization energy of hydrogen (from its ground state) is 1312 kJ mol–1. • Although an infinite number of n-values are possible ...
... crowd together as they converge toward the series limit which corresponds to ionization of the atom and is observed as the beginning of the continuum emission. Note that the ionization energy of hydrogen (from its ground state) is 1312 kJ mol–1. • Although an infinite number of n-values are possible ...
Graphene: carbon in two dimensions
... spectrum’s only essential feature. Above zero energy, the currentcarrying states in graphene are, as usual, electron-like and negatively charged. At negative energies, if the valence band is not full, unoccupied electronic states behave as positively charged quasiparticles (holes), which are often v ...
... spectrum’s only essential feature. Above zero energy, the currentcarrying states in graphene are, as usual, electron-like and negatively charged. At negative energies, if the valence band is not full, unoccupied electronic states behave as positively charged quasiparticles (holes), which are often v ...
Structure of Rare-Earth Aluminosilicate Glasses Probed by Solid-State NMR Spectroscopy
... are discontinuous across the phase boundary, thus the process can be classified as first-order phase transition, according to Paul Ehrenfest classification. In the case of no nucleation sites present to initiate crystallization, liquid phase can be maintained below the melting point, and supercooled ...
... are discontinuous across the phase boundary, thus the process can be classified as first-order phase transition, according to Paul Ehrenfest classification. In the case of no nucleation sites present to initiate crystallization, liquid phase can be maintained below the melting point, and supercooled ...
Ferromagnetism
Not to be confused with Ferrimagnetism; for an overview see Magnetism.Ferromagnetism is the basic mechanism by which certain materials (such as iron) form permanent magnets, or are attracted to magnets. In physics, several different types of magnetism are distinguished. Ferromagnetism (including ferrimagnetism) is the strongest type: it is the only one that typically creates forces strong enough to be felt, and is responsible for the common phenomena of magnetism in magnets encountered in everyday life. Substances respond weakly to magnetic fields with three other types of magnetism, paramagnetism, diamagnetism, and antiferromagnetism, but the forces are usually so weak that they can only be detected by sensitive instruments in a laboratory. An everyday example of ferromagnetism is a refrigerator magnet used to hold notes on a refrigerator door. The attraction between a magnet and ferromagnetic material is ""the quality of magnetism first apparent to the ancient world, and to us today"".Permanent magnets (materials that can be magnetized by an external magnetic field and remain magnetized after the external field is removed) are either ferromagnetic or ferrimagnetic, as are other materials that are noticeably attracted to them. Only a few substances are ferromagnetic. The common ones are iron, nickel, cobalt and most of their alloys, some compounds of rare earth metals, and a few naturally-occurring minerals such as lodestone.Ferromagnetism is very important in industry and modern technology, and is the basis for many electrical and electromechanical devices such as electromagnets, electric motors, generators, transformers, and magnetic storage such as tape recorders, and hard disks.