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... In addition to emitting at the fluorescence wave1 October 1998 y Vol. 37, No. 28 y APPLIED OPTICS ...
Atomic Bose-Hubbard Systems with Single-Particle
Atomic Bose-Hubbard Systems with Single-Particle

... states can be quantified in experiments [23]. In few-particle systems, the verification of entanglement can be achieved by witness operators [24] or state tomography [25]. For many-particle systems of interacting, delocalized particles, such as atoms in an optical lattice, a path for the experimenta ...
electron transport in quantum dots. - Leo Kouwenhoven
electron transport in quantum dots. - Leo Kouwenhoven

Comparing field ionization models in simulations of laser
Comparing field ionization models in simulations of laser

... Delone and Krainov also predict that its influence is lowest in noble gases and largest in alkali atoms. This statement however is found to be valid only for the ground state energy level. Note that instead of writing |ℰip | because the binding energies are negative, as a convention it will be writt ...
Introduction
Introduction

... The need for a deeper investigation on this subject becomes then urgent if we take a look at quantum mechanics, which currently represents the bête noire of the theory of scientific explanation. The difficulties that have raised in relating quantum mechanical phenomena to classical concepts like pro ...
Disorder and entropy rate in discrete time quantum walks
Disorder and entropy rate in discrete time quantum walks

Beyond Effective Potential via Variational Perturbation Theory
Beyond Effective Potential via Variational Perturbation Theory

Relativistic quantum information theory and quantum reference frames
Relativistic quantum information theory and quantum reference frames

... and general relativity in their domains, as well as (b) providing novel predictions for potentially observable phenomena not explained in the existing physical theory. In this work it seems extremely difficult, given the immense theoretical overhead, to derive predictions for new realistic phenomena ...
Ph410 Physics of Quantum Computation1
Ph410 Physics of Quantum Computation1

... (reversing) the program once the answer was obtained. The notion that computation could be performed by a reversible process was initially considered to be counterintuitive – and impractical. However, this idea was of great conceptual importance because it opened the door to quantum computation, bas ...
Striated AKR Emission: A Remote Tracer of Ion Solitary Structures R.L. Mutel,
Striated AKR Emission: A Remote Tracer of Ion Solitary Structures R.L. Mutel,

... of the projected spacecraft separations, as shown in the inset at lower left. Also, individual bursts have very narrow bandwidths and are nearly always observed in groups with spacing between bursts of 30-300 ms. These characteristics are described in more detail below. 2.1. Occurrence frequency The ...
BUSSTEPP Lectures on String Theory
BUSSTEPP Lectures on String Theory

Non-Abelian Anyons and Topological Quantum Computation
Non-Abelian Anyons and Topological Quantum Computation

SIMULATION OF FIELD EMISSION FROM CARBON NANOTUBES USING
SIMULATION OF FIELD EMISSION FROM CARBON NANOTUBES USING

... A single-wall carbon nanotube is formed by folding a graphene sheet into a cylinder. To demonstrate this, let us choose any two carbon atoms on a graphene sheet, atoms A and B. The two atoms will subsequently be the same atom in the tubular form. The position of each of these atoms can be represente ...
Cover Story Can Quantum Computing Provide Exponential
Cover Story Can Quantum Computing Provide Exponential

... Let me, on behalf of CSI family, execom and my own self congratulate Dr. Vijay P Bhatkar for being awarded Padma Bhushan, the third highest civilian award. CSI along with the entire Scientific Community is proud of his contributions in high performance computing (including the development of Param, t ...
The crucial role of triplets in photoinduced charge transfer and
The crucial role of triplets in photoinduced charge transfer and

... branch of this curve (in the direction of more negative DG) is located in ‘‘ normal region ’’ where |DGi| < lc , where lc is the contact value of electron transfer reorganization energy. The opposite descending branch of the same FEG curve covers the highly exergonic ‘‘ inverted region ’’, where |DG ...
Ultra-weak Photon (Biophoton ) Emissions
Ultra-weak Photon (Biophoton ) Emissions

Topological Kondo effect with Majorana fermions
Topological Kondo effect with Majorana fermions

... non-interacting electrons are still valid even after the interactions are fully applied, provided no phase transition occurs. However, the electrons in the interacting system are not free electrons anymore but electron-like ‘quasiparticles’. This is because wavefunctions and energies associated with ...
Programmable architecture for quantum computing Jialin Chen, Lingli Wang, Edoardo Charbon,
Programmable architecture for quantum computing Jialin Chen, Lingli Wang, Edoardo Charbon,

... for scalable chip-based quantum computer architectures as it allows the interaction between distant qubits without SWAP gates so as to offer individual addressability. For this reason, we will concentrate on the qubus system [14,15]—an important kind of ancilla-based model—which combines both matter ...
Spins in few-electron quantum dots
Spins in few-electron quantum dots

Formation of single and double-headed streamers in sprite
Formation of single and double-headed streamers in sprite

... of the halo calculated in the sprite-halo modeling (i.e., during the first modeling step). Without considering streamer formation, the peak luminosity of the sprite halo in a horizontal line of sight is ≃107 R at 81 km at t = 0.9 ms. For convenience, in Figure 1b we mark the regions in which only sp ...
Lindblad theory of dynamical decoherence of quantum-dot excitons P. R. Eastham,
Lindblad theory of dynamical decoherence of quantum-dot excitons P. R. Eastham,

... breaks down. This has been extensively studied recently16,19 using a variational polaron transformation.26 The variational approach can reproduce the exact results of the path integral across a range of driving strengths. In the limit of strong driving and experimentally relevant dot-phonon coupling ...
Tailoring Rydberg interactions via F\" orster resonances: state
Tailoring Rydberg interactions via F\" orster resonances: state

Improve The Convergence of Jarzynski Equality through Fast
Improve The Convergence of Jarzynski Equality through Fast

... In a time dependent system, an initial instantaneous eigenstate can make transitions to other instantaneous eigenstates during the evolution process. That is, for an initial state prepared in the instantaneous eigenstate state |nλ(0) i of the system at time 0, after the process, the state may fall o ...
Study of infrared scintillations in gaseous and liquid argon – Part II
Study of infrared scintillations in gaseous and liquid argon – Part II

... The latter technique is applied in so-called Cryogenic Avalanche Detectors (CRADs, [2]) with optical readout using combined THGEM/GAPD multiplier, operated in two-phase Ar or Xe. Here the optical readout is performed in either the Vacuum Ultraviolet (VUV) [20],[23] or NIR [21],[22] region, using Wav ...
Dr. Charles William Lucas
Dr. Charles William Lucas

... the universal force law he has refined the ring model to describe the complete set of elementary particles, their decay schemes, reactions, and excited states by introducing the classical concept of stable elementary particles being composed of primary, secondary and tertiary level three dimensiona ...
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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.
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