Publications in Scientific Journals:

A. Goebel, C. Wagenknecht, Q. Zhang, Y.-A. Chen, K. Chen, H.-J. Schmiedmayer, J.-W. Pan:
"Multistage Entanglement Swapping";
Physical Review Letters, 101 (2008), 8; 080403-1 - 080403-4.

English abstract:
We report an experimental demonstration of entanglement swapping over two quantum stages. By successful realizations of two cascaded photonic entanglement swapping process, entanglement is generated and distributed between two photons, that originate from independent sources and do not share any common past. In the experiment we use three pairs of polarization entangled photons and conduct two Bell-state measurements: one between the first and second pair, and one between the second and third pair. This results in projecting the remaining two outgoing photons from pair 1 and 3 into an entangled state, as characterized by an entanglement witness. The experiment represents an important step towards a full quantum repeater where multiple entanglement swapping is a key ingredient.

"Official" electronic version of the publication (accessed through its Digital Object Identifier - DOI)

Electronic version of the publication:

Created from the Publication Database of the Vienna University of Technology.