Active and Passive Quantum Erasers for Neutral Kaons
classification
🪐 quant-ph
hep-ph
keywords
quantumneutralactiveerasurekaonpassivealternativelychoice
read the original 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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