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R C.-T. Chen and F. Robicheaux
R C.-T. Chen and F. Robicheaux

... describe multiphoton processes in atoms @1–11#. In particular, the Floquet approximation has proved to be successful for most experimental conditions where strong lasers interact with atoms or ions. There are several assumptions in the Floquet approximation. The typical duration of a modern short pu ...
Quantum critical point and spin fluctuations in the lower
Quantum critical point and spin fluctuations in the lower

... Fe2+ ions can dramatically alter the physical and chemical properties of (Mg,Fe)O in the deep mantle, thereby changing our understanding of the Earth’s deep interior. To establish a fundamental understanding of the ground electronic state of iron, the electronic and magnetic states of Fe2+ in (Mg0.7 ...
Electron Energy Loss Spectroscopy With
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... an important weapon in the fight against cancer. One could control the doses of medication used in chemotherapy much better. The dose would be lower but much more targeted at the position of the tumour. So there would be less side effects than for classical chemotherapy and one would not harm the he ...
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... Pauli’s Exclusion Principle : ‘‘No two electrons in an atom can have the same set of four quantum numbers.’’ Two electrons can have same values for n, l and ml provided their spins are opposite (ms is different). An orbital can have at the most two electrons if they have opporite spins. Hund’s Rule ...
Self-assembled quantum dots
Self-assembled quantum dots

... follow with a different compound, e.g. aluminum arsenide (AlAs). Both the substrate and the deposited material have different electronic properties, in particular different the energy gap, thus using MBE it is possible to grow nanostructures such as quantum wells or superlattices. Not all semiconduc ...
Quantum digital spiral imaging
Quantum digital spiral imaging

... the non-local decomposition of non-integer phase vortices. A collimated 355-nm beam pumps a 5-mm long b-barium borate (BBO) crystal, where a degenerate 710 nm signal and idler photons are produced in pairs via type-I collinear SPDC and are separated by a non-polarizing beam splitter. The crystal is ...
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Class XI Physical Chemistry Short note

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Brief Introduction to Superconductivity

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Finite Element Approach of Electronic Structures THÈSE

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Quantum computers - Quantum Engineering Group
Quantum computers - Quantum Engineering Group

... dimensions can grow exponentially without an exponential cost in resources (such as time, space or energy). The standard way to achieve this follows the first DiVincenzo criterion: one may simply add well-characterized qubits to a system. A quantum system with two states, such as a quantum spin with ...
Quantum coding with finite resources
Quantum coding with finite resources

... when we restrict the size of the quantum devices used for encoding the channel inputs and decoding its outputs. This is equivalent to considering communication with only a fixed number of channel uses. In this work, following the footsteps of recent progress in classical information theory8–11, we in ...
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THE ENTROPIC ENERGY DENSITY PROGRESSION PRINCIPLE

... underlying premise of standing waves. This discrepancy however has a cause. When the wave nature of particles was discovered it was so successful that their particle nature was no longer needed, except to the define the wave function in terms of momentum. It turns out however that the particle natur ...
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On the interaction of mesoscopic quantum systems with gravity

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-photoluminescence and micro-Raman Micro spectroscopy of novel semiconductor nanostructures

... A volume of space containing only one Bravais lattice point such that it fills all of space when translated through the vectors R without either overlapping itself or leaving voids is called primitive cell. The choice of the primitive cell is also not unique though its volume does not depend on the ...
Quantum Computing and Parallel (Multicore) Processing
Quantum Computing and Parallel (Multicore) Processing

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Eliminating light shifts in single

PowerPoint - Isaac Newton Institute
PowerPoint - Isaac Newton Institute

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Some Quantum Computational Circuits
Some Quantum Computational Circuits

... This is simple to understand, each input consists of a bit which can either be in the state “1” (on) or “0” (off) and the output bits are also either 1 or 0. When we are dealing with quantum computers, we also think in terms of bits, we call these qubits (pronounced “kewbits”), though these are fund ...
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It is natural to think of quantum computations as multiparticle

... The classical unit of information is a bit, which can take one of the two values 0 and 1. Thus any macroscopic system, that can take two well-distinguished values is a physical realization of a bit. So an n-bit classical memory register can exist in any of the 2n logical states labelled 00…0 to 11…1 ...
Spin-entangled electrons - Theoretical Physics at University of
Spin-entangled electrons - Theoretical Physics at University of

Entangling Dipole-Dipole Interactions and Quantum Logic in Optical
Entangling Dipole-Dipole Interactions and Quantum Logic in Optical

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Hydrogen atom



A hydrogen atom is an atom of the chemical element hydrogen. The electrically neutral atom contains a single positively charged proton and a single negatively charged electron bound to the nucleus by the Coulomb force. Atomic hydrogen constitutes about 75% of the elemental (baryonic) mass of the universe.In everyday life on Earth, isolated hydrogen atoms (usually called ""atomic hydrogen"" or, more precisely, ""monatomic hydrogen"") are extremely rare. Instead, hydrogen tends to combine with other atoms in compounds, or with itself to form ordinary (diatomic) hydrogen gas, H2. ""Atomic hydrogen"" and ""hydrogen atom"" in ordinary English use have overlapping, yet distinct, meanings. For example, a water molecule contains two hydrogen atoms, but does not contain atomic hydrogen (which would refer to isolated hydrogen atoms).
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