https://doi.org/10.1140/epjd/e2009-00278-2
Photon losses depending on polarization mixedness
Dipartimento di Fisica, Università di Camerino,
62032 Camerino, Italy
Corresponding authors: This email address is being protected from spambots. You need JavaScript enabled to view it. This email address is being protected from spambots. You need JavaScript enabled to view it.
Received:
6
July
2009
Published online:
6
November
2009
Abstract
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
