Silicon quantum electronics
... iniaturization of logic circuits was first made possible with the invention of a working solid-state transistor. The invention of the transistor was followed by the crucial development of a fabrication process for circuits that integrated all components on a singe piece of material. This sparked the ...
... iniaturization of logic circuits was first made possible with the invention of a working solid-state transistor. The invention of the transistor was followed by the crucial development of a fabrication process for circuits that integrated all components on a singe piece of material. This sparked the ...
Metal - CFIF
... from lattice and phenomenological instanton liquid models that the QCD Dirac operator undergoes a metal - insulator transition similar to the one observed in a disordered conductor. This suggests that Anderson localization plays a fundamental role in the chiral phase transition. Based on a recent re ...
... from lattice and phenomenological instanton liquid models that the QCD Dirac operator undergoes a metal - insulator transition similar to the one observed in a disordered conductor. This suggests that Anderson localization plays a fundamental role in the chiral phase transition. Based on a recent re ...
A Noncommutative Sigma Model by Mauritz van den Worm
... Starting off in Chapter 1 we consider the C ∗ -algebra generated by a collection of operators. Following these ideas we introduce the quantum torus and study some of its more interesting properties, such as the fact that it can be written as a crossed product which will greatly aid us in determining ...
... Starting off in Chapter 1 we consider the C ∗ -algebra generated by a collection of operators. Following these ideas we introduce the quantum torus and study some of its more interesting properties, such as the fact that it can be written as a crossed product which will greatly aid us in determining ...
Decoherence of a Quantum Bit Circuit
... the time needed to get the outcome, and even faster if the readout efficiency is below the quantum limit. In order to reduce decoherence, the readout circuit should thus be switched off when the qubit is operated, and switched on just at readout time. Before explaining a possible strategy to circumv ...
... the time needed to get the outcome, and even faster if the readout efficiency is below the quantum limit. In order to reduce decoherence, the readout circuit should thus be switched off when the qubit is operated, and switched on just at readout time. Before explaining a possible strategy to circumv ...
Through scattering theory with gun and camera: Coping with conventions
... courses. It is necessary to choose a zero of energy, and it is possible to multiply the wave function by an overall global phase factor, and that’s about it. Continuum-state quantum mechanics, by contrast, presents four options—all of which, as we shall show, are of great consequence. This paper has ...
... courses. It is necessary to choose a zero of energy, and it is possible to multiply the wave function by an overall global phase factor, and that’s about it. Continuum-state quantum mechanics, by contrast, presents four options—all of which, as we shall show, are of great consequence. This paper has ...
Syllabus Advanced Level and Advanced Subsidiary Level PHYSICS
... • to follow a staged assessment route to the Advanced Level by taking the Advanced Subsidiary (AS) qualification in an earlier examination session. Subject to satisfactory performance such candidates are then only required to take the final part of the assessment (referred to in this syllabus as A2) ...
... • to follow a staged assessment route to the Advanced Level by taking the Advanced Subsidiary (AS) qualification in an earlier examination session. Subject to satisfactory performance such candidates are then only required to take the final part of the assessment (referred to in this syllabus as A2) ...
... Another novel approach to information processing is quantum computation, which makes use of quantum superpositions and entanglement of states to improve the computing efficiency in certain classes of problems. The implementation of a quantum computer requires a controlled engineering of the quantum ...
Renormalization
In quantum field theory, the statistical mechanics of fields, and the theory of self-similar geometric structures, renormalization is any of a collection of techniques used to treat infinities arising in calculated quantities.Renormalization specifies relationships between parameters in the theory when the parameters describing large distance scales differ from the parameters describing small distances. Physically, the pileup of contributions from an infinity of scales involved in a problem may then result in infinities. When describing space and time as a continuum, certain statistical and quantum mechanical constructions are ill defined. To define them, this continuum limit, the removal of the ""construction scaffolding"" of lattices at various scales, has to be taken carefully, as detailed below.Renormalization was first developed in quantum electrodynamics (QED) to make sense of infinite integrals in perturbation theory. Initially viewed as a suspect provisional procedure even by some of its originators, renormalization eventually was embraced as an important and self-consistent actual mechanism of scale physics in several fields of physics and mathematics. Today, the point of view has shifted: on the basis of the breakthrough renormalization group insights of Kenneth Wilson, the focus is on variation of physical quantities across contiguous scales, while distant scales are related to each other through ""effective"" descriptions. All scales are linked in a broadly systematic way, and the actual physics pertinent to each is extracted with the suitable specific computational techniques appropriate for each.