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Three-qubit phase gate based on cavity quantum electrodynamics
(American Physical Society, 2008)
We describe a three-qubit quantum phase gate which is implemented by passing a four-level atom in a cascade configuration initially in its ground state through a three-mode optical cavity. The three qubits are represented ...
Vacuum energy and repulsive Casimir forces in quantum star graphs
(American Physical Society, 2007)
Casimir pistons are models in which finite Casimir forces can be calculated without any suspect renormalizations. It has been suggested that such forces are always attractive, but we present several counterexamples, notably ...
Entanglement of Gaussian states using a beam splitter RID A-4660-2010 RID B-8901-2008
(American Physical Society, 2009)
We study an experimental scheme to generate Gaussian two-mode entangled states via beam splitter. Specifically, we consider a nonclassical Gaussian state (squeezed state) and a thermal state as two input modes, and evaluate ...
Control of the Goos-Hanchen shift of a light beam via a coherent driving field RID A-4660-2010
(American Physical Society, 2008)
We present a proposal to manipulate the Goos-Hanchen shift of a light beam via a coherent control field, which is injected into a cavity configuration containing the two-level atomic medium. It is found that the lateral ...
Strangeness equilibration in heavy ion collisions
(American Physical Society, 2001)
Using a relativistic transport model for heavy ion collisions at energies that Lire below the threshold for kaon and antikaon production in nucleon-nucleon collisions, we study how their abundances approach the canonical ...
Weakly interacting Bose gas in a random environment
(American Physical Society, 2009)
The localization-disorder paradigm is analyzed for a specific system of weakly repulsive Bose gas at zero temperature placed into a quenched random potential. We show that at low average density or weak enough interaction ...
Theory of weak localization in ferromagnetic (Ga,Mn)As
(American Physical Society, 2009)
We study quantum interference corrections to the conductivity in (Ga,Mn)As ferromagnetic semiconductors using a model with disordered valence-band holes coupled to localized Mn moments through a p-d kinetic-exchange ...
Functional Keldysh theory of spin torques
(American Physical Society, 2007)
We present a microscopic treatment of current-induced torques and thermal fluctuations in itinerant ferromagnets based on a functional formulation of the Keldysh formalism. We find that the nonequilibrium magnetization ...
Point-contact spectroscopy investigation of superconducting-gap anisotropy in the nickel borocarbide compound LuNi2B2C
(American Physical Society, 2005)
Point contacts are used to investigate the anisotropy of the superconducting energy gap in LuNi2B2C in the ab plane and along the c axis. It is shown that the experimental curves should be described assuming that the ...
Microscopic mechanism of the noncrystalline anisotropic magnetoresistance in (Ga,Mn)As
(American Physical Society, 2009)
Starting with a microscopic model based on the Kohn-Luttinger Hamiltonian and kinetic p-d exchange combined with Boltzmann formula for conductivity we identify the scattering from magnetic Mn combined with the strong ...