Foundations of Physics

, Volume 27, Issue 4, pp 559–577

On a possibility to find experimental evidence for the many-worlds interpretation of quantum mechanics

  • R. Plaga

DOI: 10.1007/BF02550677

Cite this article as:
Plaga, R. Found Phys (1997) 27: 559. doi:10.1007/BF02550677


The many-worlds interpretation of quantum mechanics predicts the formation of distinct parallel worlds as a result, of a quantum mechanical measurement. Communication among these parallel worlds would experimentally rule out alternatives to this interpretation. A possible procedure for “interworld” exchange of information and energy, using only state of the art quantum optical equipement, is described. A single ion is isolated from its environment in an ion trap. Then a quantum mechanical measurement with two discrete outcomes is performed on another system, resulting in the formation of two parallel worlds. Depending on the outcome of this measurement the ion is excited from only one of the parallel worlds before the ion decoheres through its interaction with the environment. A detection of this excitation in the other parallel world is direct evidence for the many-worlds interpretation. This method could have important practical applications in physics and beyond.

Copyright information

© Plenum Publishing Corporation 1997

Authors and Affiliations

  • R. Plaga
    • 1
  1. 1.MunichGermany
  2. 2.Max-Planck-Institut für PhysikMunichGermany