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Active and Passive Quantum Erasers for Neutral Kaons

A. Bramon·G. Garbarino·B. C. Hiesmayr
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Abstract

Quantum marking and quantum erasure are discussed for the neutral kaon system. Contrary to other two-level systems, strangeness and lifetime of a neutral kaon state can be alternatively measured via an "active" or a "passive" procedure. This offers new quantum erasure possibilities. In particular, the operation of a quantum eraser in the "delayed choice" mode is clearly illustrated.

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A. Bramon, G. Garbarino, B. C. Hiesmayr. 2004-04-06. Active and Passive Quantum Erasers for Neutral Kaons. https://doi.org/10.1103/physreva.69.062111

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