Heidelberg 2015 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 31: Poster: Quantum Optics and Photonics II

Q 31.47: Poster

Dienstag, 24. März 2015, 17:00–19:00, C/Foyer

Dissipative preparation of entangled states — •Joachim Fischbach and Matthias Freyberger — Institut für Quantenphysik, Universität Ulm, D-89069 Ulm, Germany

Usually a quantum system is prepared by starting from a well defined initial state. After applying several unitary operations, the final state is reached. Dissipative state preparation schemes, in contrast, start from an arbitrary initial state and, without exerting any external control operations, end up in the final steady state. In our contribution we focus on the dissipative preparation of entangled states. We try to transfer methods from unitary state preparation, like projective measurements, to enhance the fidelity of our preparation scheme. This seemingly counterintuitive approach combines the excellent control available in contemporary experiments with the apparent advantages of a dissipative state preparation, where environmental effects are in-cooperated into the scheme.