Nonlocality and entanglement in a strange system

Autor(en)

Beatrix Hiesmayr

Abstrakt

We show that the relation between nonlocality and entanglement is subtler than one naively expects. In order to do this we consider the neutral kaon system - which is oscillating in time (particle-anti-particle mixing) and decaying - and describe it as an open quantum system. We consider a Bell-CHSH inequality and show a novel violation for non-maximally entangled states. Considering the change of purity and entanglement in time we find that, despite the fact that only two degrees of freedom at a certain time can be measured, the neutral kaon system does not behave like a bipartite qubit system. © Springer-Verlag Berlin Heidelberg 2007.

Organisation(en)

Teilchenphysik

Journal

European Physical Journal C

Band

50

Seiten

73-79

Anzahl der Seiten

7

ISSN

1434-6044

DOI

https://doi.org/10.1140/epjc/s10052-006-0199-x

Publikationsdatum

2007

Peer-reviewed

Ja

ÖFOS 2012

103036 Theoretische Physik

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/nonlocality-and-entanglement-in-a-strange-system(0c359ec8-8176-47f2-9aab-31b236126d71).html