Jagiellonian University Repository

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

Two-mode squeezed vacuum state coupled to the common ...

Show full item record

dc.contributor.author Prauzner-Bechcicki, Jakub [SAP11019528] pl
dc.date.accessioned 2015-01-21T12:36:00Z
dc.date.available 2015-01-21T12:36:00Z
dc.date.issued 2004 pl
dc.identifier.issn 1751-8113 pl
dc.identifier.uri http://ruj.uj.edu.pl/xmlui/handle/item/2648
dc.language eng pl
dc.rights Dodaję tylko opis bibliograficzny *
dc.rights.uri *
dc.title Two-mode squeezed vacuum state coupled to the common thermal reservoir pl
dc.type JournalArticle pl
dc.abstract.en Entangled states play a crucial role in quantum information protocols, thus the dynamical behaviour of entanglement is of great importance. In this letter, 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 infinitely long interaction is not only entangled, but also pure. For comparison we also consider a model in which each mode is coupled to its own reservoir. pl
dc.description.volume 37 pl
dc.description.number 15 pl
dc.identifier.doi 10.1088/0305-4470/37/15/L04 pl
dc.identifier.eissn 1751-8121 pl
dc.title.journal Journal of Physics. A, Mathematical and Theoretical pl
dc.language.container eng pl
dc.affiliation Wydział Fizyki, Astronomii i Informatyki Stosowanej : Instytut Fizyki im. Mariana Smoluchowskiego pl
dc.subtype Article pl
dc.identifier.articleid L173 pl


Files in this item

Files Size Format View

There are no files associated with this item.

This item appears in the following Collection(s)