Introduction to the Bethe Ansatz I
... In 1931 Hans Bethe2 presented a method for obtaining the exact eigenvalues and eigenvectors of the onedimensional (1D) spin-1/2 Heisenberg model, a linear array of electrons with uniform exchange interaction between nearest neighbors. Bethe’s parametrization of the eigenvectors, the Bethe ansatz, ha ...
... In 1931 Hans Bethe2 presented a method for obtaining the exact eigenvalues and eigenvectors of the onedimensional (1D) spin-1/2 Heisenberg model, a linear array of electrons with uniform exchange interaction between nearest neighbors. Bethe’s parametrization of the eigenvectors, the Bethe ansatz, ha ...
Quantum Money from Hidden Subspaces
... These early ideas about quantum money inspired the field of quantum cryptography [13]. But strangely, the subject of quantum money itself lay dormant for more than two decades, even as interest in quantum computing exploded. However, the past few years have witnessed a “quantum money renaissance.” ...
... These early ideas about quantum money inspired the field of quantum cryptography [13]. But strangely, the subject of quantum money itself lay dormant for more than two decades, even as interest in quantum computing exploded. However, the past few years have witnessed a “quantum money renaissance.” ...
Compatibility in Multiparameter Quantum Metrology
... in the single parameter case, the bound is saturable in the limit of an infinite number of repetitions of an experiment using the maximum likelihood estimator [25]. The first substantial difference of multiparameter metrology from the single parameter case can already be discussed at the classical leve ...
... in the single parameter case, the bound is saturable in the limit of an infinite number of repetitions of an experiment using the maximum likelihood estimator [25]. The first substantial difference of multiparameter metrology from the single parameter case can already be discussed at the classical leve ...
Mechanical quantum resonators A. N. Cleland and M. R. Geller
... box [5], have generated significant new interest in the potential for superconductor– based quantum computation [6]. Coherence times τϕ up to 5 µ s have been reported in the current-biased devices [2], with corresponding quantum-coherent quality factors Qϕ ≡ τϕ ∆E/h̄ of the order of 105, indicating ...
... box [5], have generated significant new interest in the potential for superconductor– based quantum computation [6]. Coherence times τϕ up to 5 µ s have been reported in the current-biased devices [2], with corresponding quantum-coherent quality factors Qϕ ≡ τϕ ∆E/h̄ of the order of 105, indicating ...
PDF
... place. The M-CNOT gate was a HWP cut in a halfcircular D shape with the fast axis forming a 45◦ angle with the H direction. The plate was aligned so that it only affected the bottom section of the beam. A second HWP, identical to the first except for the fact that its axis was parallel to the H axis ...
... place. The M-CNOT gate was a HWP cut in a halfcircular D shape with the fast axis forming a 45◦ angle with the H direction. The plate was aligned so that it only affected the bottom section of the beam. A second HWP, identical to the first except for the fact that its axis was parallel to the H axis ...
Thermal and Quantum Phase Transitions
... Here, the brackets h·i refer to a thermodynamic average in a suitable Gibbs ensemble and, for quantum systems, to a quantum-mechanical expectation value. In most cases, the OP is chosen to be a local observable where “local” means that ϕ can be (in principle) defined at every point in space and time ...
... Here, the brackets h·i refer to a thermodynamic average in a suitable Gibbs ensemble and, for quantum systems, to a quantum-mechanical expectation value. In most cases, the OP is chosen to be a local observable where “local” means that ϕ can be (in principle) defined at every point in space and time ...
Noncommutative geometry with applications to quantum physics
... of Quantum Mechanics. Partial unification is obtained by the Standard Model of elementary particles which combines Quantum Theory and Special Relativity within the framework of Quantum Field Theory, in order to obtain a so far coherent description of three of the four known elementary interactions ( ...
... of Quantum Mechanics. Partial unification is obtained by the Standard Model of elementary particles which combines Quantum Theory and Special Relativity within the framework of Quantum Field Theory, in order to obtain a so far coherent description of three of the four known elementary interactions ( ...
UNIVERSITY OF CALICUT (Abstract)
... hybridisation; Semi empirical MO treatment of planar conjugated molecules – Hückel Molecular Orbital (HMO) theory of ethylene, butadiene & allylic anion, charge distributions and bond orders from the coefficients of HMO, calculation of free valence, HMO theory of aromatic hydrocarbons (benzene); for ...
... hybridisation; Semi empirical MO treatment of planar conjugated molecules – Hückel Molecular Orbital (HMO) theory of ethylene, butadiene & allylic anion, charge distributions and bond orders from the coefficients of HMO, calculation of free valence, HMO theory of aromatic hydrocarbons (benzene); for ...
Spin transport through nanostructures B. K ,
... with a single electron spin. The discoveries of the spin blockade in sequential transport through quantum dots due to spin selection rules [4] and spin charge separation [5, 6] were important steps for achieving such a goal. The standard way to generate a spin-polarized current is to inject electron ...
... with a single electron spin. The discoveries of the spin blockade in sequential transport through quantum dots due to spin selection rules [4] and spin charge separation [5, 6] were important steps for achieving such a goal. The standard way to generate a spin-polarized current is to inject electron ...
Interface between path and orbital angular momentum
... he progress in technological developments over the last decades has enabled the realization of highly complex photonic quantum experiments1. A popular approach to increase the complexity of the set-up and the dimensionality of the observed system uses integration of optical elements on photonic chip ...
... he progress in technological developments over the last decades has enabled the realization of highly complex photonic quantum experiments1. A popular approach to increase the complexity of the set-up and the dimensionality of the observed system uses integration of optical elements on photonic chip ...
Schrodinger Evolution for the Universe: Reparametrization
... which the Hamiltonian is itself a constraint. In such theories, the Dirac observables are unchanging ‘perennials’ and, thus, there is an acute problem in recovering a description of physical change. Several promising lines of argument towards the construction and interpretation of perennials exist i ...
... which the Hamiltonian is itself a constraint. In such theories, the Dirac observables are unchanging ‘perennials’ and, thus, there is an acute problem in recovering a description of physical change. Several promising lines of argument towards the construction and interpretation of perennials exist i ...
Concentration-dependent absorption and emission behaviour of
... The fluorescence spectra were measured using front-face illumination in a self-assembled spectrofluorimeter [28]. A tungsten lamp spectrally filtered with an interference filter centered at A =550 nm was used as excitation source. The backward emitted fluorescence light was collected, directed to a ...
... The fluorescence spectra were measured using front-face illumination in a self-assembled spectrofluorimeter [28]. A tungsten lamp spectrally filtered with an interference filter centered at A =550 nm was used as excitation source. The backward emitted fluorescence light was collected, directed to a ...
algunos resultados asociados a problemas
... case must be considered. Namely, the case where the particle disappears upon reaching a wall and then appears at the other end must be considered. This type of movement (which is very unusual because the particle is not actually trapped between the two walls) corresponds to that of a quantum particl ...
... case must be considered. Namely, the case where the particle disappears upon reaching a wall and then appears at the other end must be considered. This type of movement (which is very unusual because the particle is not actually trapped between the two walls) corresponds to that of a quantum particl ...
Eikonal Approximation K. V. Shajesh
... used for studying low energy processes. In quantum field theories involving coupling constants smaller than one we use the standard weak-coupling perturbation series which is parallel in its approach to the Born approximation in quantum mechanics. In the 1950’s and 1960’s when high energy physics wa ...
... used for studying low energy processes. In quantum field theories involving coupling constants smaller than one we use the standard weak-coupling perturbation series which is parallel in its approach to the Born approximation in quantum mechanics. In the 1950’s and 1960’s when high energy physics wa ...
Gravity as a fluid dynamic phenomenon in a superfluid
... Here we move further and we hypothesize that these particles are superuid symmetric vortices of those quanta constituting the cosmic superuid (probably dark energy). Because of superuidity, these vortices can have an indeterminately long life. Vorticity is interpreted as spin (a particle's intern ...
... Here we move further and we hypothesize that these particles are superuid symmetric vortices of those quanta constituting the cosmic superuid (probably dark energy). Because of superuidity, these vortices can have an indeterminately long life. Vorticity is interpreted as spin (a particle's intern ...
Relativistic Adiabatic Approximation and Geometric Phase
... generalization of the quantum adiabatic approximation. The main purpose of this article is to develop such a generalization for a charged Klein-Gordon field Φ in an arbitrary globally hyperbolic spacetime (M, g) which is minimally coupled to an electromagnetic potential A, as well as an arbitrary sc ...
... generalization of the quantum adiabatic approximation. The main purpose of this article is to develop such a generalization for a charged Klein-Gordon field Φ in an arbitrary globally hyperbolic spacetime (M, g) which is minimally coupled to an electromagnetic potential A, as well as an arbitrary sc ...
Quantum error-correcting codes from algebraic curves
... code which attains the Singleton bound. Rains [28, Theorem 2] showed that all quantum MDS codes are pure. There is an interesting relationship betweeen quantum MDS codes and classical MDS codes. If Q is a quantum MDS stabilizer code with n − 2d + 2 > 0, then it gives rise to classical MDS codes [22, ...
... code which attains the Singleton bound. Rains [28, Theorem 2] showed that all quantum MDS codes are pure. There is an interesting relationship betweeen quantum MDS codes and classical MDS codes. If Q is a quantum MDS stabilizer code with n − 2d + 2 > 0, then it gives rise to classical MDS codes [22, ...
Quantum Information Processing
... orthodox interpretation of I~)). It is also often called the Copenhagen interpretation because its foremost advocate was Neils Bohr. In a nutshell, Bohr's view was that since quantum systems only express themselves through the results recorded by measurement apparatus-there is SPILLER: QUANTUM INFOR ...
... orthodox interpretation of I~)). It is also often called the Copenhagen interpretation because its foremost advocate was Neils Bohr. In a nutshell, Bohr's view was that since quantum systems only express themselves through the results recorded by measurement apparatus-there is SPILLER: QUANTUM INFOR ...