Photon losses depending on polarization mixedness
Dipartimento di Fisica, Università di Camerino,
62032 Camerino, Italy
Published online: 6 November 2009
We introduce a quantum channel describing photon losses depending on the degree of polarization mixedness. This can be regarded as a model of quantum channel with correlated errors between discrete and continuous degrees of freedom. We consider classical information over a continuous alphabet encoded on weak coherent states as well as classical information over a discrete alphabet encoded on single photons using dual rail representation. In both cases we study the one-shot capacity of the channel and its behaviour in terms of correlation between losses and polarization mixedness.
PACS: 03.67.Hk – Quantum communication / 42.50.Ex – Optical implementations of quantum information processing and transfer
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2009