Darmstadt 2008 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 36: Quanteninformation (Konzepte und Methoden II)

Q 36.5: Talk

Thursday, March 13, 2008, 12:00–12:15, 1B

Unambiguous discrimination of many mixed states — •Matthias Kleinmann, Hermann Kampermann, and Dagmar Bruß — Heinrich-Heine-Universität Düsseldorf, Institut für Theoretische Physik III, Universitätsstraße 1, 40225 Düsseldorf

While the optimal unambiguous discrimination of two mixed states has already attracted considerable attention, only a few results [1,2] are known for the optimal case of more than two mixed states. We show that many concepts and some classes of optimal solutions known from the two-state case [3] can be generalized to the many-state case.

[1] Y.C. Eldar, M. Stojnic, and B. Hassibi, Phys. Rev. A 69, 062318 (2004), [2] Y. Feng, R. Duan, and M. Ying, Phys. Rev. A 70, 012308 (2004), [3] M. Kleinmann, H. Kampermann, and D. Bruß (in preparation)