Data di Pubblicazione:
2010
Citazione:
Quantum communication with photon-number entangled states and realistic photodetection / V.C. Usenko, M. Paris. - In: PHYSICS LETTERS A. - ISSN 0375-9601. - 374:11-12(2010), pp. 1342-1345.
Abstract:
We address the effects of realistic photodetection, with nonunit quantum efficiency and background noise (dark counts), on the performances of quantum communication schemes based on photon-number entangled states (PNES). We consider channels based on Gaussian twin-beam states (TWB) and non-Gaussian two-mode coherent states (TMC) and evaluate the channel capacity by optimizing the bit discrimination threshold. We found that TWB-based channels are more robust against noise than TMC-based ones and that this result is almost independent on the statistics of dark counts.
Tipologia IRIS:
01 - Articolo su periodico
Elenco autori:
V.C. Usenko, M. Paris
Link alla scheda completa: