ELFT HÍRADÓ

[Janos Asboth <asboth.janos AT wigner.mta.hu>]

WIGNER KOLLOKVIUM BEATRIX HIESMAYR

(University of Vienna)
"The missing antimatter puzzle
and security of quantum cryptography"

Időpont: 2014. október 21. (kedd) 14:00
Hely: MTA Wigner FK SZFI, I. épület 1. emeleti Tanácsterem
Összefoglaló:

One of the unsolved problems in Particle Physics is to explain why we
live in a universe dominated by matter since at the big bang matter
and antimatter should have been produced in equal amount. According to
Andrei Sacharow three conditions need to be satisfied to explain our
universe, one being a violation of the combined
charge-conjugation-parity (CP) symmetry. In 1964 Cronin and Fitch
observed in neutral K-meson a small violation of the CP symmetry
system for which they were rewarded by the Nobel Prize.

Another field of physics, quantum information theory, deals with
achievable limits of knowledge. Entanglement allows for generation of
keys at two distant places that enable secure communication if and
only if John Bell's 1964-theorem is violated. This theorem, also known
as Bell's inequality, is satisfied for any local realistic theory with
hidden parameters. A violation of the inequality proves the existence
of correlations that are stronger than those achievable via classical
physics.

This talk shows a puzzling relation between those two independent
findings in 1964. This first conclusive test will be performed at
current accelerator facilities.
Minden érdeklődőt szívesen látunk!

Asbóth János
szfi-seminar AT wigner.mta.hu