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Effect of Interatomic Separation on Entanglement Dynamics in a Two-Atom Two-Mode Model

Autor: Sinha, K., Cummings, N. I., Hu, B. L.

Publikováno v: J. Phys. B: At. Mol. Opt. Phys. 45 (2012) 035503

We analyze the time evolution of quantum entanglement in a model consisting of two two-level atoms interacting with a two-mode electromagnetic field for a variety of initial states and interatomic separations. We study two specific atomic separations

Externí odkaz: http://arxiv.org/abs/1108.2681

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Non-Markovian Dynamics and Entanglement of Two-level Atoms in a Common Field

Autor: Fleming, C. H., Cummings, N. I., Anastopoulos, Charis, Hu, B. L.

Publikováno v: J. Phys. A. 45, 065301 (2012)

We derive the stochastic equations and consider the non-Markovian dynamics of a system of multiple two-level atoms in a common quantum field. We make only the dipole approximation for the atoms and assume weak atom-field interactions. From these assu

Externí odkaz: http://arxiv.org/abs/1012.5067

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Protecting and Dynamically Generating Entanglement in a Two-Atom Two-Field-Mode Model

Autor: Sinha, K., Cummings, N., Hu, B. L.

We analyze the time evolution of quantum entanglement in a model consisting of two two-level atoms interacting with a two-mode electromagnetic field for a variety of initial states. We study two different coupling schemes motivated by the forms that

Externí odkaz: http://arxiv.org/abs/1004.1834

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The Rotating-Wave Approximation: Consistency and Applicability from an Open Quantum System Analysis

Autor: Fleming, Chris, Cummings, N. I., Anastopoulos, Charis, Hu, B. L.

Publikováno v: J. Phys. A: Math. Theor. 43, 405304 (2010)

We provide an in-depth and thorough treatment of the validity of the rotating-wave approximation (RWA) in an open quantum system. We find that when it is introduced after tracing out the environment, all timescales of the open system are correctly re

Externí odkaz: http://arxiv.org/abs/1003.1749

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Burst Oscillation Periods from 4U 1636--53: A Constraint on the Binary Doppler Modulation

Autor: Giles, A. B., Hill, K. M., Strohmayer, T. E., Cummings, N.

We present a study of the distribution of asymptotic burst oscillation periods for a sample of 26 bursts from 4U 1636-53 observed with the Rossi X-ray Timing Explorer (RXTE). The burst sample includes both archival and proprietary data and spans more

Externí odkaz: http://arxiv.org/abs/astro-ph/0109294

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