Speaker
Paolo Colciaghi
(Department of Physics, University of Basel)
Description
We observe for the first time the famous Einstein-Podolsky-Rosen (EPR) paradox with two spatially separated, massive many-particle systems. We split a spin-squeezed Bose-Einstein condensate into two spatially separated parts, on which we perform independent spin measurements to demonstrate the paradox. Our results show that the conflict between quantum mechanics and the classical understanding of locality and realism does not disappear as the system size is increased to over 1000 massive particles. Furthermore, we demonstrate the individual control of both systems on the quantum level, which is a necessary condition to exploit EPR entanglement as a resource for quantum technology.
Author
Paolo Colciaghi
(Department of Physics, University of Basel)
Co-authors
Yifan Li
(Universität Basel)
Philipp Treutlein
Tilman Zibold