COLLOQUIUM: Bell's theorem, entanglement, quantum teleportation and all that
by
Tony Leggett(University of Illinois at Urbana-Champaign)
→
Europe/Stockholm
Oskar Klein Auditorium
Oskar Klein Auditorium
Description
One of the most surprising aspects of quantum mechanics is that under
certain circumstances it does not allow individual physical systems, even
when isolated, to possess properties in their own right. This feature,first
clearly appreciated by John Bell in 1964, has in the last three decades been
tested experimentally and found (in most people's opinion) to be spectacularly confirmed. More recently it has been realized that it permits various
operations which are classically impossible, such as "teleportation" and
secure-in-principle cryptography. This talk is a very basic introduction to
the subject, which requires only elementary quantum mechanics; it is primarily aimed at senior undergraduates or beginning graduate students, but has on occasion been given with apparent success as a departmental colloquium.
