404 page not found
Sorry, you have tried to reach the page http://www.dfg.de/ en/ funded_projects/ prizewinners/ leibniz_prize/ 2012/ wrachtrup/ index.html which doesn't exist.
You can choose between the following options:
- Click on any other link on the page.
- If you typed the URL make sure the capitalization and punctuation are correct and try again.
- Choose the following link, to be forwarded to our homepage: Homepage www.dfg.de/en/