We present the full characterization of phase-randomized or phase-averaged coherent states, a class of states ex- ploited in communication channels and in decoy state-based quantum key distribution protocols. We report on the suitable formalism to analytically describe the main features of these states and on their experimental investiga- tion, that results in agreement with theory. In particular, we consider a recently proposed non-Gaussianity mea- sure based on the quantum fidelity, that we compare with previous ones, and we use the mutual information to investigate the amount of correlations one can produce by manipulating this class of states.
Characterization of phase-averaged coherent states / A. Allevi, M. Bondani, P. Marian, T.A. Marian, S. Olivares. - In: JOURNAL OF THE OPTICAL SOCIETY OF AMERICA. B, OPTICAL PHYSICS. - ISSN 0740-3224. - 30:10(2013 Sep 06), pp. 2621-2627. [10.1364/JOSAB.30.002621]
Characterization of phase-averaged coherent states
S. OlivaresUltimo
2013
Abstract
We present the full characterization of phase-randomized or phase-averaged coherent states, a class of states ex- ploited in communication channels and in decoy state-based quantum key distribution protocols. We report on the suitable formalism to analytically describe the main features of these states and on their experimental investiga- tion, that results in agreement with theory. In particular, we consider a recently proposed non-Gaussianity mea- sure based on the quantum fidelity, that we compare with previous ones, and we use the mutual information to investigate the amount of correlations one can produce by manipulating this class of states.File | Dimensione | Formato | |
---|---|---|---|
allevi_JOSAB_30_2621.pdf
accesso solo dalla rete interna
Tipologia:
Publisher's version/PDF
Dimensione
751.76 kB
Formato
Adobe PDF
|
751.76 kB | Adobe PDF | Visualizza/Apri Richiedi una copia |
Pubblicazioni consigliate
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.