Portmann, Christopher, Dr.

I'm a joint postdoc, at the Swiss Federal Institute of Technology in Zurich (ETH Zurich), in the Quantum Information Theory group of Prof. Renato Renner, and at the University of Geneva, in the Group of Applied Physics - Optics of Prof. Nicolas Gisin.

My main research interest is quantum information theory, and its applications to cryptography. By extension I'm also interested in classical information theory, and in particular the gap (or absence of gap) between the two.

In Zurich, I'm currently mostly working on quantum-proof extractors, in particular two-sources extractors and the (in)equivalence between classical- and quantum-proof extractors. Recently I have also taken an interest in the theory of composable security. With the group in Geneva, I'm working on quantum key distribution: new protocols to close the gap between theory and practice, and various issues related to the implementation of post-processing.

For more details on my research and publications, check http://www.is.titech.ac.jp/~christo5/.