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Path Information in Quantum Interferometry

  • Anton Zeilinger
  • Thomas Herzog
  • Michael A. Horne
  • Paul G. Kwiat
  • Klaus Mattle
  • Harald Weinfurter
Conference paper

Abstract

Ever since the famous Bohr-Einstein dialogue,1 it has been known that it is not possible in an interference experiment to have a maximum visibility interference pattern and path information at the same time. This feature of quantum mechanics, necessary for its consistency, has been elevated by Feynman2 to a principle: whenever it is not possible, not even in principle, to obtain path information, then one has to superpose probability amplitudes instead of adding probabilities for making experimental predictions.

Keywords

Entangle State Interference Fringe Photon Pair Polarize Beam Splitter Order Fringe 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media New York 1996

Authors and Affiliations

  • Anton Zeilinger
    • 1
  • Thomas Herzog
    • 1
  • Michael A. Horne
    • 2
  • Paul G. Kwiat
    • 1
  • Klaus Mattle
    • 1
  • Harald Weinfurter
    • 2
  1. 1.Institut fiir ExperimentalphysikUniversität InnsbruckInnsbruckAustria
  2. 2.Department of PhysicsStonehill CollegeNorth EastonUSA

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