Regular Article - Theoretical Physics
On the distances between entangled pseudoscalar mesons states
Istituto Nazionale di Ricerca Metrologica, Strada delle Cacce 91, 10135, Torino, Italy
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Revised: 15 April 2008
Published online: 17 May 2008
Entangled states of pseudoscalar mesons represent a very interesting tool for studying the foundations of quantum mechanics, e.g. for testing the Bell inequalities. Recently, they also emerged as a test bench for quantum information protocols. On the other hand, from a quantum information point of view, the characterization of the distance between two quantum states is a topic of the utmost importance. In this work, with the purpose of providing a useful tool for further investigations, we address the problem of which distance allows for a better discrimination between density matrices appearing in pseudoscalar phenomenology.
© Springer-Verlag , 2008