Quantum error correcting codes and Weyl commutation relations
... determines a nondegenerate symmetric bicharacter and W ((a1 , b1 ), (a2 , b2 )) = W (a1 , a2 ) ⊗ W (b1 , b2 ), (ai , bi ) ∈ A × B, i = 1, 2, determines the Weyl operators for A × B where L2 (A × B) is naturally identified with L2 (A) ⊗ L2 (B). We shall use all these basic properties of the Weyl oper ...
... determines a nondegenerate symmetric bicharacter and W ((a1 , b1 ), (a2 , b2 )) = W (a1 , a2 ) ⊗ W (b1 , b2 ), (ai , bi ) ∈ A × B, i = 1, 2, determines the Weyl operators for A × B where L2 (A × B) is naturally identified with L2 (A) ⊗ L2 (B). We shall use all these basic properties of the Weyl oper ...
Semiclassical approximation of excitations in spin-1 Heisenberg antiferromagnets
... The above model is also known as the Rotor Model. At g = 0 we get a perfectly ordered state with anti-ferromagnetic coupling. Non zero g destroys ordering. It can be proved that even for small values of g the effective contribution to the Hamiltonian due to the second term is very small and thus can ...
... The above model is also known as the Rotor Model. At g = 0 we get a perfectly ordered state with anti-ferromagnetic coupling. Non zero g destroys ordering. It can be proved that even for small values of g the effective contribution to the Hamiltonian due to the second term is very small and thus can ...
Nucleus-mediated spin-flip transitions in GaAs quantum dots
... Manipulation of the electron spin in a coherent way requires that it should be relatively well isolated from the surrounding environment. Coupling a quantum dot, or any closed quantum system, to its environment can cause decoherence and dissipation. One measure of the strength of the coupling to the ...
... Manipulation of the electron spin in a coherent way requires that it should be relatively well isolated from the surrounding environment. Coupling a quantum dot, or any closed quantum system, to its environment can cause decoherence and dissipation. One measure of the strength of the coupling to the ...
What determines the structure of quantum physics?
... a philosophy postulating that a physical theory should be built and verified entirely on the basis of accessible sensory experience. Nevertheless the standard formulation of quantum theory involves additional concepts such as global complex phases which are not directly accessible. The GPT framework ...
... a philosophy postulating that a physical theory should be built and verified entirely on the basis of accessible sensory experience. Nevertheless the standard formulation of quantum theory involves additional concepts such as global complex phases which are not directly accessible. The GPT framework ...
Quantum and Ecosystem Entropies
... for excellent summaries of progress. However, the symmetry between quantum mechanics and ecosystems is not yet complete as fundamental principles used with great effectiveness to quantify quantum statistical properties have yet to be exploited for ecosystems. This paper is a step in that direction. ...
... for excellent summaries of progress. However, the symmetry between quantum mechanics and ecosystems is not yet complete as fundamental principles used with great effectiveness to quantify quantum statistical properties have yet to be exploited for ecosystems. This paper is a step in that direction. ...
Linköping University Post Print New quantum limits in plasmonic devices
... Abstract – Surface plasmon polaritons (SPPs) have recently been recognized as an important future technique for microelectronics. Such SPPs have been studied using classical theory. However, current state-of-the-art experiments are rapidly approaching nanoscales, and quantum effects can then become i ...
... Abstract – Surface plasmon polaritons (SPPs) have recently been recognized as an important future technique for microelectronics. Such SPPs have been studied using classical theory. However, current state-of-the-art experiments are rapidly approaching nanoscales, and quantum effects can then become i ...
How Classical Particles Emerge From the Quantum World
... in which the spatial part is a simple product state. Clearly, this state does not obey the anti-symmetrization postulate, and from a fundamental point of view it therefore cannot be right. It is true that as long as we only consider observables that commute with position, we shall not arrive at any ...
... in which the spatial part is a simple product state. Clearly, this state does not obey the anti-symmetrization postulate, and from a fundamental point of view it therefore cannot be right. It is true that as long as we only consider observables that commute with position, we shall not arrive at any ...
Lecture Notes
... Need to choose the cut-off point L in the Fourier domain Can’t test the process for infinitely strong coherent states must choose some max There is a continuum of ’s process cannot be tested for every coherent state must interpolate Process not guaranteed to be physical (positive, trace pres ...
... Need to choose the cut-off point L in the Fourier domain Can’t test the process for infinitely strong coherent states must choose some max There is a continuum of ’s process cannot be tested for every coherent state must interpolate Process not guaranteed to be physical (positive, trace pres ...
Quantum annealing with manufactured spins
... This programmable artificial spin network bridges the gap between the theoretical study of ideal isolated spin networks and the experimental investigation of bulk magnetic samples. Moreover, with an increased number of spins, such a system may provide a practical physical means to implement a quantu ...
... This programmable artificial spin network bridges the gap between the theoretical study of ideal isolated spin networks and the experimental investigation of bulk magnetic samples. Moreover, with an increased number of spins, such a system may provide a practical physical means to implement a quantu ...
