Asymmetrical two-atom entanglement in a coated microsphere

We study evolution of entanglement of two two-level atoms placed inside a multilayered microsphere. We show that due to inhomogeneity of the field modes this entanglement essentially depends on the atomic positions (asymmetrical entanglement) and also on the detuning between the atomic transitions and field frequencies. The robust and complete entanglement can be achieved even in the resonant case when the atoms have different effective coupling constants, and it can be extended in time if the detuning is large enough. We study analytically the lossless case and estimate numerically the effect of dissipative processes

Two-atom entanglement assisted by an external pulsed pumping

We have studied the effect of external pumping on the dynamics of the entanglement of two two-level atoms interacting with a cavity mode. It is shown that a sequence of well detuned pulses of the classical field leads to the dynamical formation of an extended plateau-like zone of high level atomic entanglement with the duration much longer than the period of Rabi oscillations. The dissipation reduces the amplitude of the entanglement, however practically does not change the width of such zones. � World Scientific Publishing Company

The role of FABP2 gene polymorphism in alcoholic cirrhosis

We numerically study the dynamical excitations in Bose-Einstein condensate (BEC) placed in periodic and quasiperiodic 2D optical lattice (OL). In case of the repulsive mean-field interaction the BEC quantum tunneling leads to a progressive soliton's splitting and generating of secondary solitons, which migrate to closest trapping potential minima. A nontrivial soliton dynamics appears when a series of ?-pulses (phase kicks) are applied to the optical lattice. Such sudden perturbation produces a dynamic redistribution of the secondary solitons, leading to a formation of an artificial solitonic superlattice. Different geometries of OL are analyzed. " 2007 Elsevier B.V. All rights reserved.",,,,,,"10.1016/j.physleta.2007.05.012",,,"http://hdl.handle.net/20.500.12104/45288","http://www.scopus.com/inward/record.url?eid=2-s2.0-34548614233&partnerID=40&md5=0c641f9275a894f74af2cfd85692d61c",,,,,,"05-jun",,"Physics Letters, Section A: General, Atomic and Solid State Physics",,"51