The Price for Perfect Secrecy

Decanato - Facoltà di scienze informatiche

Data d'inizio: 14 Giugno 2010

Data di fine: 15 Giugno 2010

The Faculty of Informatics is pleased to announce a seminar given by Stefan Wolf

DATE: Monday, June 14th 2010
PLACE: USI Università della Svizzera italiana, room SI-008, Informatics building (Via G. Buffi 13)
TIME: 09.30

Information-theoretic secrecy cannot be achieved from scratch but must be based on some, ultimately physical, premise. This insight motivates the search for the minimal price for achieving such a security level.
Examples of realistic assumptions are noise in communication channels or the postulates of quantum physics. A recent result shows that there exists a variant of quantum key agreement which is device-independent and does not even rely on quantum physics if the assumption is made that no unauthorized information flows within, in between, and from the legitimate laboratories. One possibility of ensuring this is via the non-signaling postulate of relativity if measurements are carried out simultaneously enough.

Stefan Wolf has been a Swiss National Science Foundation (SNF) Professor for Quantum Information at the Computer Science Department of ETH Zurich since October 2005. Born in Schaffhausen, Switzerland, he received a Dipl. Math. ETH, followed by a PhD in Computer Science from ETH Zurich under the supervision of Professor Ueli Maurer. After a postdoc at McGill University, Montreal, he was Assistant Professor at University of Waterloo, Ontario, and Université de Montréal, Quebec.

HOST: Prof. Mauro Pezzè