Zobrazeno 1 - 10
of 72
pro vyhledávání: '"Dung, Ho Trung"'
Publikováno v:
Phys. Rev. A 81, 062322 (2010)
We introduce two entanglement conditions that take the form of inequalities involving expectation values of operators. These conditions are sufficient conditions for entanglement, that is if they are satisfied the state is entangled, but if they are
Externí odkaz:
http://arxiv.org/abs/1005.4453
Publikováno v:
Phys. Rev. A 81, 062311 (2010)
There have been numerous studies of entanglement in spin systems. These have usually focussed on examining the entanglement between individual spins or determining whether the state of the system is completely separable. Here we present conditions th
Externí odkaz:
http://arxiv.org/abs/1005.4448
Publikováno v:
Phys. Rev. A 80 052335 (2009)
We derive several entanglement conditions employing non-hermitian operators. We start with two conditions that were derived previously for field mode operators, and use them to derive conditions that can be used to show the existence of field-atom en
Externí odkaz:
http://arxiv.org/abs/0910.4567
Publikováno v:
Optics and Spectroscopy (USSR) 108 (3), 391 (2010)
Based on a unified approach to macroscopic QED that allows for the inclusion of amplification in a limited space and frequency range, we study the Casimir force as a Lorentz force on an arbitrary partially amplifying system of linearly locally respon
Externí odkaz:
http://arxiv.org/abs/0902.3874
Publikováno v:
Physical Review A 80 (5), 051801(R) (2009)
On the basis of macroscopic quantum electrodynamics, a theory of Casimir forces in the presence of on linearly amplifying bodies is presented which provides a consistent framework for studying the effect of, e.g., amplifying left-handed metamaterials
Externí odkaz:
http://arxiv.org/abs/0902.1613
Publikováno v:
Physical Review A 79 (2), 022903 (2009)
Within the framework of macroscopic quantum electrodynamics in linear, causal media, we study the van der Waals potentials of ground-state atoms in planar magnetodielectric host media. Our investigation extends earlier ones in two aspects: It allows
Externí odkaz:
http://arxiv.org/abs/0901.0634
Publikováno v:
Phys. Scripta T 135, 014019 (2009)
We study the resonant Casimir--Polder potential of an excited atom near a half space containing magneto-electric meta-material of various kinds on the basis of macroscopic quantum electrodynamics. Analytical results are obtained in the nonretarded an
Externí odkaz:
http://arxiv.org/abs/0809.3086
Publikováno v:
Physical Review A 77 (5), 053824 (2008)
On the basis of a general formula obtained earlier via fourth-order erturbation theory within the framework of macroscopic quantum electrodynamics, the van der Waals potential between two neutral, unpolarized, ground-state atoms in the presence of a
Externí odkaz:
http://arxiv.org/abs/0802.0126
Publikováno v:
Physical Review A 78 (5), 053828 (2008)
Within the framework of macroscopic quantum electrodynamics, the resonant van der Waals potential experienced by an excited two-level atom near a planar magneto-electric two-layer system consisting of a slab of left-handed material and a perfect mirr
Externí odkaz:
http://arxiv.org/abs/0711.3369
Autor:
Nguyen, Tuan Anh, Dung, Ho Trung
Using the Born expansion of the Green tensor, we consider the spontaneous decay rate of an excited atom placed in the vicinity of a rectangular plate. We discuss the limitations of the commonly used simplifying assumption that the plate extends to in
Externí odkaz:
http://arxiv.org/abs/quant-ph/0701137