Shor`s Factoring Algorithm and Modern Cryptography. An Illustration
... known as the key distribution problem, as numerous authors have observed19 : Before Alice and Bob can begin exchanging hopefully non-cryptanalysable cryptograms, they must exchange–in a non-encrypted form–the information necessary to establish their key; they cannot be confident this information exc ...
... known as the key distribution problem, as numerous authors have observed19 : Before Alice and Bob can begin exchanging hopefully non-cryptanalysable cryptograms, they must exchange–in a non-encrypted form–the information necessary to establish their key; they cannot be confident this information exc ...
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 ...
Transport Theory
... Electrons may scatter from impurities/defects, electron-electron interactions, electron-phonon interaction etc... How do we model this? Brute force approach of solving the full Schrödinger equation is highly impractical! Key idea: The electron gets a “life-time” – i.e., an electron placed in a Bloc ...
... Electrons may scatter from impurities/defects, electron-electron interactions, electron-phonon interaction etc... How do we model this? Brute force approach of solving the full Schrödinger equation is highly impractical! Key idea: The electron gets a “life-time” – i.e., an electron placed in a Bloc ...
Ph.D. Thesis Rodrigo Gallego
... quantifier that represents the fraction of events that admit a local description. We focus on systems that exhibit, in that sense, maximal nonlocality. By exploiting the link between Kochen-Specker theorems and nonlocality, we derive a systematic recipe to construct maximally nonlocal correlations. ...
... quantifier that represents the fraction of events that admit a local description. We focus on systems that exhibit, in that sense, maximal nonlocality. By exploiting the link between Kochen-Specker theorems and nonlocality, we derive a systematic recipe to construct maximally nonlocal correlations. ...
Entanglement spectrum of a random partition: Connection with the
... matrices ρA and ρB are identical, though their Hilbert spaces are distinct. By definition, for a fixed partitioning probability p, the B subsystem is, on average, equivalent to the A subsystem obtained with a partitioning probability 1 − p. Therefore, the ensemble-averaged spectra of the entanglemen ...
... matrices ρA and ρB are identical, though their Hilbert spaces are distinct. By definition, for a fixed partitioning probability p, the B subsystem is, on average, equivalent to the A subsystem obtained with a partitioning probability 1 − p. Therefore, the ensemble-averaged spectra of the entanglemen ...
2012) all (F I
... Day Date Topics Wed 23 Jan Symmetries, conservation laws, and degeneracies; SO(4) and Pauli’s solution to the hydrogen atom Continuous and discrete symmetries Thu 24 Jan Space-inversion (parity) symmetry and applications in nature Mon 28 Jan Lattice translation as a discrete symmetry and Bloch’s Th ...
... Day Date Topics Wed 23 Jan Symmetries, conservation laws, and degeneracies; SO(4) and Pauli’s solution to the hydrogen atom Continuous and discrete symmetries Thu 24 Jan Space-inversion (parity) symmetry and applications in nature Mon 28 Jan Lattice translation as a discrete symmetry and Bloch’s Th ...
Universitat Autonoma de Barcelona Facultat de Ciencies, Departament de F sica
... cold atoms, solid state systems, trapped ions, or quantum dots. In these systems, quantum information is encoded, for instance, in the internal energy, in the vibrational states, in the position, in the angular momentum or in the spin state. On the other hand, in quantum communication, photons are t ...
... cold atoms, solid state systems, trapped ions, or quantum dots. In these systems, quantum information is encoded, for instance, in the internal energy, in the vibrational states, in the position, in the angular momentum or in the spin state. On the other hand, in quantum communication, photons are t ...
Ionisation in a strong laser field
... of electrons can be included as an effective potential (like in Hartree-Fock methods), i.e. only one electron is allowed to absorb energy and ionise, while the other electrons remain effectively frozen at the core [10, 11, 12, 13, 14]. One can further generalise single photo-ionisation to multiphoto ...
... of electrons can be included as an effective potential (like in Hartree-Fock methods), i.e. only one electron is allowed to absorb energy and ionise, while the other electrons remain effectively frozen at the core [10, 11, 12, 13, 14]. One can further generalise single photo-ionisation to multiphoto ...
Hanle effect and electron spin polarization in temperature Linköping University Post Print
... thermal variation of the former will not significantly affect the latter. Unfortunately, independent measurements of the other two time constants were not possible in our case due to the weak PL close to RT that is beyond the spectral and sensitivity range of the transient polarized PL spectroscopy ...
... thermal variation of the former will not significantly affect the latter. Unfortunately, independent measurements of the other two time constants were not possible in our case due to the weak PL close to RT that is beyond the spectral and sensitivity range of the transient polarized PL spectroscopy ...
Optical Properties of Semiconductor Nanostructures in Magnetic Field DISSERTATION
... The semiconductor nanostructures like quantum wells, wires or dots have been investigates now for more than 30 years. They have found a giant number of applications in the technology, just to mention few of them: lasers, light emitting diodes, light detectors or transistors. This number is still inc ...
... The semiconductor nanostructures like quantum wells, wires or dots have been investigates now for more than 30 years. They have found a giant number of applications in the technology, just to mention few of them: lasers, light emitting diodes, light detectors or transistors. This number is still inc ...
Nonperturbative quantum geometries
... In addition, the quantities that we need to define are not, as they are in usual q u a n t u m field theory, expectation values. They are constraint equations which state that a product of operators annihilates some particular state. In particular, although regularization is required to define the a ...
... In addition, the quantities that we need to define are not, as they are in usual q u a n t u m field theory, expectation values. They are constraint equations which state that a product of operators annihilates some particular state. In particular, although regularization is required to define the a ...
SOLID STATE PHYSICS PART II Optical Properties of Solids
... The discussion thus far has been directed toward relating the complex dielectric function or the complex conductivity to physical observables. If we know the optical constants, then we can find the reflectivity. We now want to ask the opposite question. Suppose we know the reflectivity, can we find ...
... The discussion thus far has been directed toward relating the complex dielectric function or the complex conductivity to physical observables. If we know the optical constants, then we can find the reflectivity. We now want to ask the opposite question. Suppose we know the reflectivity, can we find ...
Density Matrix Calculation of Surface Enhanced
... a valuable vibration-specific spectroscopic tool in spite of lingering questions about the SERS mechanism. Enhancement factors of up to ~106 for molecules on noble metal surfaces were obtained decades ago.1,2 With the recent push toward single-molecule SERS, enhancements of 1012-1014 have been estim ...
... a valuable vibration-specific spectroscopic tool in spite of lingering questions about the SERS mechanism. Enhancement factors of up to ~106 for molecules on noble metal surfaces were obtained decades ago.1,2 With the recent push toward single-molecule SERS, enhancements of 1012-1014 have been estim ...
Department of Physics, Chemistry and Biology Master’s Thesis Erik Enqvist
... beam is brought to collision with either fixed targets or head-on to other particles in different experiments, all recorded by detectors. An overview of the huge accelerator complex is shown in Fig. 1.1 [1]. In order to keep the beam life time long enough to perform controlled experiments, the densi ...
... beam is brought to collision with either fixed targets or head-on to other particles in different experiments, all recorded by detectors. An overview of the huge accelerator complex is shown in Fig. 1.1 [1]. In order to keep the beam life time long enough to perform controlled experiments, the densi ...
- Institute of plasma physics
... dimension (~cm) and unphysically high collisionality, and even then... ...with 100 particles per cell, the PIC code can only resolve charge densities of a few %. PIC codes work well in the non-neutral sheath where the relative charge density (ni-ne)/no~1, but in the quasineutral SOL the real relativ ...
... dimension (~cm) and unphysically high collisionality, and even then... ...with 100 particles per cell, the PIC code can only resolve charge densities of a few %. PIC codes work well in the non-neutral sheath where the relative charge density (ni-ne)/no~1, but in the quasineutral SOL the real relativ ...
SEMICLASSICAL AND LARGE QUANTUM NUMBER LIMITS
... Conversely, the anticlassical or extreme quantum limit is reached for the opposite conditions to those listed in (3), e.g. |F | → ∞ or E → 0 for d > 0. For positive degrees d, e.g. all sorts of homogeneous oscillators, the first line of (3) expresses the widely appreciated fact, that the semiclassic ...
... Conversely, the anticlassical or extreme quantum limit is reached for the opposite conditions to those listed in (3), e.g. |F | → ∞ or E → 0 for d > 0. For positive degrees d, e.g. all sorts of homogeneous oscillators, the first line of (3) expresses the widely appreciated fact, that the semiclassic ...
Quantum electrodynamics
In particle physics, quantum electrodynamics (QED) is the relativistic quantum field theory of electrodynamics. In essence, it describes how light and matter interact and is the first theory where full agreement between quantum mechanics and special relativity is achieved. QED mathematically describes all phenomena involving electrically charged particles interacting by means of exchange of photons and represents the quantum counterpart of classical electromagnetism giving a complete account of matter and light interaction.In technical terms, QED can be described as a perturbation theory of the electromagnetic quantum vacuum. Richard Feynman called it ""the jewel of physics"" for its extremely accurate predictions of quantities like the anomalous magnetic moment of the electron and the Lamb shift of the energy levels of hydrogen.