Stuttgart 2012 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 49: Quanteninformation: Konzepte und Methoden 5

Q 49.5: Vortrag

Donnerstag, 15. März 2012, 15:00–15:15, V7.01

(contribution withdrawn) Entanglement dynamics in local many-sided noisy channels — •Michael Siomau and Ali Kamli — Department of Physics, Jazan University, Saudi Arabia

We study entanglement dynamics of pure three- and four-qubit Greenberger-Horne-Zeilinger-type entangled states when one, two or three (four) qubits being subjected simultaneously to general local noise. Employing a lower bound for three-qubit concurrence as an entanglement measure, we show that for some many-sided noisy channels the entanglement dynamics can be completely described by the evolution of the entangled states in single-sided channels.