Results 71 to 80 of about 21,330 (112)

Sensing interactions in atomic quantum systems

2022
Experiments that cool, trap, and control atoms, ions, and molecules provide a unique testbed. Hybrid ion-atom systems combine the well-controllable platforms of trapped ions and ultracold quantum gases and link them together by the intermediate-range ion-atom interaction.
Galantini, Claudia, Lous, Rianne S.
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Halogen–halogen interactions in perhalogenated ethanes: An interacting quantum atoms study

Computational and Theoretical Chemistry, 2015
In this paper, intramolecular halogen–halogen interactions in perhalogenated ethanes CX3–CX′3 (X, X′ = F, Cl, Br) were investigated using Bader’s theory of Atoms in Molecules along the potential energy surface defined by the XCCX′ torsion angle. Besides examining the topology of the electron density in terms of critical points, we made use of Pendás ...
Yahia-Ouahmed, Meziane, Tognetti, Vincent, Joubert, Laurent   +2 more
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Quantum correlations in two interacting atom ensembles

Journal of Physics B: Atomic, Molecular and Optical Physics, 2013
The power-law scaling behaviours of the quantum discord and the scaled concurrence are presented in two coupled atom ensembles, which exhibit the Dicke-like quantum phase transition. In the super-excitation phase, the quantum discord reaches its maximum beyond the critical point and then decreases monotonically, which is ascribed to the double ...
Yu-Yu Zhang, Chen Wang
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Matter-field interaction in atomic physics and quantum optics

Physical Review A, 1987
Almost forty years ago one of us (W.E.L.) noticed that within the analysis of experiments on the hydrogen fine structure the matter-field interaction was sensitive to the choice of gauge when decaying states were used. In the present paper this problem is resolved for the Bethe-Lamb equations in the context of the two-level model with Weisskopf-Wigner ...
, Lamb, , Schlicher, , Scully
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Atom-phonon interactions studied using a consistent quantum treatment

Physical Review B, 1986
A consistent approach to atom--surface-energy transfer in one dimension is presented. A semigroup technique is employed to establish equations of motion for a quantal phonon reservoir, which is coupled to the propagation of a wave packet. The time-dependent Schroedinger equation is solved using a pseudospectral technique. The average energy transfer to
, Cerjan, , Kosloff
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Strong laser–atom interaction as a quantum kicked dynamics

Physics Letters A, 2001
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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Complementarity and quantum erasure with dispersive atom-field interactions

Physical Review A, 1996
The "welcher Weg" (which-path) detector as described by Scully et al. [Nature 351, 111 (1991)] employs a pair of initially empty micromaser cavities placed in front of a double-slit apparatus in an atomic interferometer. Laser excited atoms spontaneously emit a photon into either cavity thereby marking the atoms' path and thereby destroying the ...
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Quantum mechanical interaction of light with atoms

2015
Abstract The quantum mechanical description of the interaction of light with atoms treats absorption, gain, and recombination as upward and downward induced transitions of electrons between two states by perturbation due to the optical electric field. This provides the basis for a quantitative theory of diode lasers.
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Quantum mechanics of the atom-radiation interaction

2000
Abstract The calculations of the preceding chapter display some of the inadequacies of the Einstein theory of interaction of light with atoms. The theory itself gives no prescription for computing the values of the A and B coefficients appropriate to a given atomic transition.
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Coherent quantum interaction between photons and atoms

2014
Exploring coherent photon-atom interaction at quantum level has become more and more important in modern quantum physics and quantum information science. In this PhD thesis research work, we established two cold 85 Rb atoms ensemble in 2-dimensional dark-line magneto-optical trap with OD more than 100 and produced long coherence time (~1us) heralded ...
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