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Q: Fachverband Quantenoptik und Photonik

Q 34: Quanteninformation: Konzepte IV

Q 34.7: Talk

Wednesday, March 4, 2009, 15:30–15:45, VMP 6 HS-D

Dynamical Control of Entanglement — •Felix Platzer, Florian Mintert, and Andreas Buchleitner — Albert-Ludwigs-Universität Freiburg, Germany

We study the possibility to control entanglement dynamics with the help of coherent driving. Based on algebraic approximations to multipartite generalizations of the concurrence C [1,2], we analytically find local control Hamiltonians that maximize time derivatives of C. With this approach we investigate optimal ways of preparing highly entangled multi-partite states for various types of interactions, both in closed systems and in the presence of dissipation and decoherence.

[1] F. Mintert and A. Buchleitner, Phys. Rev. Lett. 98, 140505 (2007) [2] L. Aolita, A. Buchleitner and F. Mintert, Phys. Rev. A 78, 022308 (2008)