Evolution of Quantum Entanglement in Open Systems

Journal Article · Wed Aug 04 00:00:00 EDT 2010 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3482232· OSTI ID:21426509

Isar, A ^[1]

---

1. National Institute of Physics Nuclear Engineering, Bucharest-Magurele, P.O. Box MG-6 (Romania)

In the framework of the theory of open systems based on completely positive quantum dynamical semigroups, we give a description of the continuous-variable entanglement for a system consisting of two uncoupled harmonic oscillators interacting with a thermal environment. Using Peres-Simon necessary sufficient criterion for separability of two-mode Gaussian states, we show that for some values of diffusion coefficient, dissipation constant and temperature of the environment, the state keeps for all times its initial type: separable or entangled. In other cases, entanglement generation, entanglement sudden death or a periodic collapse revival of entanglement take place.

• OSTI ID: 21426509
• Journal Information: AIP Conference Proceedings, Vol. 1262, Issue 1; Conference: TIM-09: Physics conference, Timisoara (Romania), 27-28 Nov 2010; Other Information: DOI: 10.1063/1.3482232; (c) 2010 American Institute of Physics; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ALGEBRA
DIFFUSION
ENERGY LEVELS
HARMONIC OSCILLATORS
MATRICES
PERIODICITY
QUANTUM ENTANGLEMENT
QUANTUM MECHANICS
MATHEMATICS
MECHANICS
VARIATIONS