High-efficiency manipulations of triply entangled states in neutron polarimetry

Autor(en)

Stephan Sponar, Jürgen Klepp, Katharina Durstberger-Rennhofer, Claus Schmitzer, Hannes Bartosik, H. Geppert, M. Both, Gerald Badurek, Yuji Hasegawa

Abstrakt

Entanglement occupies a peculiar position in quantum mechanics (QM). It occurs in quantum systems that consist of space-like separated parts or-more generally-in systems whose observables belong to disjoint Hilbert spaces. The latter is the case with single-neutron systems. Here, we report on a neutron polarimetric experiment, where a triply entangled Greenberger-Horne-Zeilinger state is exploited. The entanglement of spin, momentum and total energy degree of freedom is generated utilizing a suitable combination of radio-frequency and static magnetic fields. An average deviation of expectation values from theory-ideal circumstances-of 0.016(1) confirms the predictions of QM with high accuracy, demonstrating the high-efficiency manipulation of the entangled single-neutron system.

Organisation(en)

Physik Funktioneller Materialien

Externe Organisation(en)

Technische Universität Wien, European Organization for Nuclear Research (CERN)

Journal

New Journal of Physics

Band

14

Anzahl der Seiten

14

ISSN

1367-2630

DOI

https://doi.org/10.1088/1367-2630/14/5/053032

Publikationsdatum

2012

Peer-reviewed

Ja

ÖFOS 2012

103018 Materialphysik

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/c40eb04e-8f65-4909-b6e7-446e1f25adfe