Entanglement sudden death and influence of the dynamical Stark shift for two Tavis–Cummings atoms

Autor:	Levan Chotorlishvili, V. Skrinnikov, Z. Toklikishvili, Peter Schwab
Rok vydání:	2010
Předmět:	Rest (physics) Physics symbols.namesake Bell state Stark effect Quantum mechanics symbols General Physics and Astronomy Quantum entanglement Sudden death
Zdroj:	Physics Letters A. 374:1642-1647
ISSN:	0375-9601
Popis:	The time dependence of the entanglement for two Tavis–Cummings atoms with dynamical Stark shift is studied. It is shown that the influence of the dynamical Stark shift is not equivalent for different Bell states. Namely for the states ϕ = 1 2 ( | 00 〉 ± | 11 〉 ) sudden death of entanglement happens, while for the states ψ = 1 2 ( | 01 〉 ± | 10 〉 ) we still have a rest of entanglement. A direct relation between the sudden death of entanglement and the values of the dynamical Stark shift is shown. The fidelity of the system is evaluated.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::88b3383ce5546da51f55377e132dc9ff https://doi.org/10.1016/j.physleta.2010.02.006 Zobrazit plný text záznamu Full Text from ScienceDirect