Quantum marking and quantum erasure for neutral kaons
A. Bramon, G. Garbarino, B. Hiesmayr
Abstract
Entangled K0 anti-K0 pairs are shown to be suitable to discuss extensions and tests of Bohr's complementarity principle through the quantum marking and quantum erasure techniques suggested by M. O. Scully and K. Druehl [Phys. Rev. A 25, 2208 (1982)]. Strangeness oscillations play the role of the traditional interference pattern linked to wave-like behaviour, whereas the distinct propagation in free space of the KS and KL components mimics the two possible interferometric paths taken by particle-like objects.
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