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Time-ordering dependence of measurements in teleportation

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Abstract

We trace back the phenomenon of “delayed-choice entanglement swapping” as it was realized in a recent experiment to the commutativity of the projection operators that are involved in the corresponding measurement process. We also propose an experimental set-up which depends on the order of successive measurements corresponding to noncommutative projection operators. In this case entanglement swapping is used to teleport a quantum state from Alice to Bob, where Bob has now the possibility to examine the noncommutativity within the quantum history.

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Authors and Affiliations

  1. Faculty of Physics, University of Vienna, Boltzmanngasse 5, 1090, Vienna, Austria

    Reinhold A. Bertlmann, Heide Narnhofer & Walter Thirring

Authors
  1. Reinhold A. Bertlmann
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  2. Heide Narnhofer
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  3. Walter Thirring
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Correspondence to Reinhold A. Bertlmann.

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Bertlmann, R.A., Narnhofer, H. & Thirring, W. Time-ordering dependence of measurements in teleportation. Eur. Phys. J. D 67, 62 (2013). https://doi.org/10.1140/epjd/e2013-30647-y

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  • DOI: https://doi.org/10.1140/epjd/e2013-30647-y

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