Passive Quantum Erasure for Neutral Kaons
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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.
12 pages, contribution to the Festschrift in honor of Prof. Jose Adolfo de Azcarraga for his 60th birthday, Salamanca (Spain), June 9-11, 2003
12 pages, contribution to the Festschrift in honor of Prof. Jose Adolfo de Azcarraga for his 60th birthday, Salamanca (Spain), June 9-11, 2003