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2011-04-05 [ ]

Atom and its Quantum Mirror Image

A team of physicists experimentally produces quantum-superpositions, simply using a mirror.

Kommt das Licht direkt vom Atom oder von seinem Spiegelbild? Ein Spiegel erzeugt eine quantenmechanische Überlagerung.

Standing in front of a mirror, we can easily tell apart ourselves from our mirror image. The mirror does not affect our motion in any way. For quantum particles, this is much more complicated. In a spectacular experiment in the labs of the Heidelberg University, a group of physicists from Heidelberg Unversity, together with colleagues at TU Munich and TU Vienna extended a gedankenexperiment by Einstein and managed to blur the distinction between a particle and its mirror image. The results of this experiment have now been published in the journal “Nature Physics”.

Single spontaneous photon generates coherence between matterwaves
J. TOMKOVIC, M. SCHREIBER, J. WELTE, M. KIFFNER, J. SCHMIEDMAYER, M. K. OBERTHALER
Nature Physics, 7, 379–382 (2011); DOI: 10.1038/NPHYS1961

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