Hannover 2003 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Downloads | Hilfe

Q: Quantenoptik

Q 37: Quanteninformation 4

Q 37.1: Vortrag

Donnerstag, 27. März 2003, 14:00–14:15, F102

Four entangled qubits — •Mohamed Bourennane1, Manfred Eibl1, Sascha Gärtner1, Christian Kurtsiefer1, and Harald Weinfurter1,21Sektion Physik, Ludwing-Maximilians-Universität, 80799 München, Germany — 2Max-Planck-Institut für Quantenoptik, 85748 Garching, Germany

Superposition and Entanglement are key elements and important resources for quantum communication and computation. We have used spontaneous parametric down conversion to direclty produce a highly symmetric polarisation entangled four-photon state. We will present experimental demonstration of invariance under unitary transformations and robustness of the entanglement against disposal of two of the 4 photons. We finally show how these states can be used for encoding quantum information in decoherence-free subspaces.

100% | Mobil-Ansicht | English Version | Kontakt/Impressum/Datenschutz
DPG-Physik > DPG-Verhandlungen > 2003 > Hannover