Frankfurt 2006 – scientific programme

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Q: Quantenoptik und Photonik

Q 50: Quanteninformation IV

Q 50.2: Talk

Wednesday, March 15, 2006, 14:15–14:30, HI

Unravelling Entanglement — •Marc Busse, A.R.R. de Carvalho, O. Brodier, C. Viviescas, and A. Buchleitner — Max Planck Institut fuer Physik Komplexer Systeme, Noethnitzer Strasse 38, 01187 Dresden

Entanglement is the crucial resource for quantum information processing. Unfortunately, this invaluable quantum property is very easily lost, due to unavoidable interactions with the environment. Therefore it is of great interest to understand the time evolution of entanglement in open systems. However, this turns out to be a puzzle, since the common definition of mixed state entanglement measures involves an optimisation procedure. We tackle the problem through a quantum trajectory approach, combined with an optimization over different quantum jump operators [1].

[1] also see Olivier Brodier’s talk ("Optimal jump operators for monitoring entanglement") at this conference