Hamburg 2009 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 56: Poster IV

Q 56.34: Poster

Thursday, March 5, 2009, 16:30–19:00, VMP 9 Poster

Encoding qubits into quantum noise resistant states — •Dennis Heim, Ferdinand Gleisberg, and Matthias Freyberger — Institut für Quantenphysik, Universität Ulm, D-89069 Ulm, Germany

The intention of the proposed scheme is to protect information of an unknown pure qubit against effects of quantum noise represented by a quantum channel. By applying the proposed scheme before and after the qubit passes the channel the resulting fidelity will be higher than the fidelity without protection. The effect of a phase damping channel, for example, can be reduced by coupling and decoupling an additional qubit to the unknown initial state.