Searching for evolutions from pure states into mixed states with entangled neutral kaons

Entangled two-quantum states may be a sensitive probe for a loss of quantum coherence due to apparent violations of quantum mechanics, e.g. as caused by gravitation. We show that there exists a modest experiment sensitive to any one of the nine phenomenological parameters which describe decoherence in the neutral kaon system.Received: 14 March 2003, Published online: 26 November 2003