Corpus ID: 119370987

Passive Quantum Erasure for Neutral Kaons

  title={Passive Quantum Erasure for Neutral Kaons},
  author={A. Bramon and G. Garbarino and B. Hiesmayr},
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.