It is only now that we realize that quantum physics is more than a radical departure from classical physics. It also offers many new possibilities for information processing.
All experiments are in remarkable agreement with quantum theory.
O ur activities in experimental quantum optics started in 1993 with a project on cavity effects in silvered microfibres. Nobody then would have imagined that in 1999 we would be one of the world leaders in this field. Within national projects we developed compact sources of entangled photon pairs. With such a source we performed a record-breaking Bell experiment between two villages near Geneva separated by more than 10 km. More generally, we are studying now the relation between non-locality and relativity and the application of novel sources of entangled photons for quantum communication.