Two-mode squeezed vacuum state coupled to the common thermal reservoir
| dc.creator | Prauzner-Bechcicki, Jakub S. | |
| dc.date | 2002-11-19 | |
| dc.date | 2004-03-29 | |
| dc.date.accessioned | 2026-07-07T06:05:31Z | |
| dc.date.available | 2026-07-07T06:05:31Z | |
| dc.description | 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. To quantify entanglement we use the logarithmic negativity. We derive a condition, which assures that the state remains entangled in spite of the interaction with the reservoir. Moreover for the case of interaction with vacuum as an environment we show that a state of interest after intinitely long interaction is not only entangled, but also pure. For comparison we also consider a model in which each of both modes is coupled to its own reservoir. | |
| dc.description | replaced with version published in J. Phys. A | |
| dc.identifier | https://arxiv.org/abs/quant-ph/0211114 | |
| dc.identifier | http://arxiv.org/abs/quant-ph/0211114 | |
| dc.identifier | J. Phys. A 37, (2004) L173 - L181 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/90663 | |
| dc.subject | Quantum Physics | |
| dc.title | Two-mode squeezed vacuum state coupled to the common thermal reservoir | |
| dc.type | text |