Berry phase in entangled systems: A proposed experiment with single neutrons

Reinhold A. Bertlmann, Katharina Durstberger, Yuji Hasegawa, and Beatrix C. Hiesmayr
Phys. Rev. A 69, 032112 – Published 25 March 2004

Abstract

The influence of the geometric phase, in particular the Berry phase, on an entangled spin-12 system is studied. We discuss in detail the case, where the geometric phase is generated only by one part of the Hilbert space. We are able to cancel the effects of the dynamical phase by using the “spin-echo” method. We analyze how the Berry phase affects the Bell angles and the maximal violation of a Bell inequality. Furthermore we suggest an experimental realization of our setup within neutron interferometry.

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  • Received 15 September 2003

DOI:https://doi.org/10.1103/PhysRevA.69.032112

©2004 American Physical Society

Authors & Affiliations

Reinhold A. Bertlmann1, Katharina Durstberger1,*, Yuji Hasegawa2, and Beatrix C. Hiesmayr3,†

  • 1Institute for Theoretical Physics, University of Vienna, Boltzmanngasse 5, 1090 Vienna, Austria
  • 2Atominstitut de Österreichischen Universitäten, Stadionällee 2, 1020 Vienna, Austria
  • 3Grup de Física Teòrica, Universitat Autònoma de Barcelona, E-08193 Bellaterra, Spain

  • *Electronic address: kadu@ap.univie.ac.at
  • Electronic address: hiesmayr@ap.univie.ac.at

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Issue

Vol. 69, Iss. 3 — March 2004

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