Quantitative aspects of entanglement in the driven Jaynes–Cummings model

Autor:	Marcelo A. Marchiolli
Rok vydání:	2006
Předmět:	Physics Quasiprobability distribution Jaynes–Cummings model Field (physics) Measure (physics) Quantum Physics Quantum entanglement Atomic and Molecular Physics and Optics symbols.namesake Quantum mechanics symbols Statistical physics EPR paradox Quantum field theory Quantum information
Zdroj:	Journal of Modern Optics. 53:2733-2751
ISSN:	1362-3044 0950-0340
DOI:	10.1080/09500340600832725
Popis:	Adopting the framework of the Jaynes–Cummings model with an external quantum field, we obtain exact analytical expressions of the normally ordered moments for any kind of cavity and driving fields. Such analytical results are expressed in the integral form, with their integrands having a commom term that describes the product of the Glauber–Sudarshan quasiprobability distribution functions for each field, and a kernel responsible for the entanglement. Considering a specific initial state of the tripartite system, the normally ordered moments are then applied to investigate not only the squeezing effect and the nonlocal correlation measure based on the total variance of a pair of Einstein–Podolsky–Rosen type operators for continuous variable systems, but also the Shchukin–Vogel criterion. This kind of numerical investigation constitutes the first quantitative characterization of the entanglement properties for the driven Jaynes–Cummings model.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::e285d58ded571d2596f05cdbf4bde5ce https://doi.org/10.1080/09500340600832725 Zobrazit plný text záznamu