Bell Test for the Free Motion of Material Particles

Clemens Gneiting and Klaus Hornberger
Phys. Rev. Lett. 101, 260503 – Published 24 December 2008

Abstract

We present a scheme to establish nonclassical correlations in the motion of two macroscopically separated massive particles without resorting to entanglement in their internal degrees of freedom. It is based on the dissociation of a diatomic molecule with two temporally separated Feshbach pulses generating a motional state of two counterpropagating atoms that is capable of violating a Bell inequality by means of correlated single-particle interferometry. We evaluate the influence of dispersion on the Bell correlation, showing it to be important but manageable in a proposed experimental setup. The latter employs Bose-Einstein condensation of fermionic lithium atoms, uses laser-guided atom interferometry, and seems to be within the reach of present-day technology.

  • Figure
  • Received 9 July 2008

DOI:https://doi.org/10.1103/PhysRevLett.101.260503

©2008 American Physical Society

Authors & Affiliations

Clemens Gneiting and Klaus Hornberger

  • Arnold Sommerfeld Center for Theoretical Physics, Ludwig-Maximilians-Universität München, Theresienstraße 37, 80333 Munich, Germany

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Issue

Vol. 101, Iss. 26 — 31 December 2008

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