English News

Quantum repeater demonstrated

Date: 2009-01-07

Physics Web, August 27, 2008

 

Building up entanglement 
The answer is the quantum repeater — and now Jian-Wei Pan, Yu-Ao Chen and colleagues from the University of   Heidelberg, the University of Science and Technology of China the Vienna University of Technology have  demonstrated a crude version of such a device. The idea is that the quantum channel is split up into segments,
each of which is easier to entangle. Once the segments are entangled individually they can then be entangled  together via the same process.