Computer Science Colloquium
Time+Place : Tuesday 14/06/2011 14:30 room 337-8 Taub  Bld.
Speaker    : Stefan Wolf
Affiliation: Computer Science Dept, ETH Zurich
Host       : Johann Makowsky
Title      : The Price for Perfect Secrecy
Abstract   :
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, inbetween, 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.
Short Bio:
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
Universite de Montreal, Quebec.
Refreshments served from 14:15 on,
 	Lecture starts at 14:30
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