3 papers
quant-ph2003
Witnessing multipartite entanglement
Mohamed Bourennane, Manfred Eibl, Christian Kurtsiefer +7
We present the experimental detection of genuine multipartite entanglement using entanglement witness operators. To this aim we introduce a canonical way of constructing and decomp…
quant-ph2003
Decoherence-Free Quantum Information Processing with Four-Photon Entangled States
Mohamed Bourennane, Manfred Eibl, Sascha Gaertner +3
Decoherence-free states protect quantum information from collective noise, the predominant cause of decoherence in current implementations of quantum communication and computation.…
quant-ph2003
Experimental observation of four-photon entanglement from down-conversion
M. Eibl, S. Gaertner, M. Bourennane +3
We observe polarization-entanglement between four photons produced from a single down-conversion source. The non-classical correlations between the measurement results violate a ge…