Two-mode squeezed vacuum state coupled to the common thermal reservoir

Preprint

19 November 2002

preprint
Published by arXiv in arXiv

Abstract

Entangled states play a crucial role in quantum information protocols, thus the dynamical behavior of entanglement is of a great importance. In this paper we consider a two-mode squeezed vacuum state coupled to one thermal reservoir as a model of an entangled state embedded in an environment. As a criterion for entanglement we use a continuous-variable equivalent of the Peres-Horodecki criterion, namely the Simon criterion. We derive a condition, which assures that the state remains entangled in spite of the interaction with the reservoir.

Keywords

SQUEEZED VACUUM STATE
VACUUM STATE COUPLED
DYNAMICAL BEHAVIOR
THERMAL RESERVOIR
TWO MODE SQUEEZED

All Related Versions

Version 1, 2002-11-19, ArXiv
Version 2, 2003-05-09, ArXiv
Version 3, 2003-08-05, ArXiv
Version 4, 2003-08-20, ArXiv
Version 5, 2003-12-12, ArXiv

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