Dear Colleagues

Tomorrow Wednesday, at 17:15, the Kolloquium series of SS05 will continue with the talk outlined below. From 16:45, there will be tea and coffee in front of the lecture hall 16 G 05 at the Irchel Campus of the University (the usual place!). For directions or further information, go to

http://www.physik.unizh.ch/teaching/kolloquium05/kolloquium.html

You will notice that there is still one slot of the Kolloquium program open: June 29, the last date before SS05 ends. Suggestions for a speaker are welcome.

With best regards,

Juerg Osterwalder

The Photon and the Vacuum Cleaner

Prof. Ian Walmsley Clarendon Laboratory, Oxford University

Quantum technologies based on optics often rely on photon bunching and measurement with feedforward to achieve an effective nonlinear interaction between otherwise transparent particles. The efficacy of this strategy for implementing nonlinear interactions requires pure state single photon wave packets. These, however, are not so easy to come by. In this talk I will discuss some methods and tools that enable the preparation of such states.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Prof. Dr. Jürg Osterwalder Physik-Institut, Universität Zürich Winterthurerstr. 190 CH-8057 Zürich, Switzerland phone: +41 44 635 5827 <<< NOTE NEW AREA CODE ! >>> lab: +41 44 635 5745 sekr: +41 44 635 5781 fax: +41 44 635 5704 e-mail: osterwal@physik.unizh.ch web: http://www.physik.unizh.ch/groups/grouposterwalder/ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~