Data di Pubblicazione:
2011
Citazione:
Decoherence of Gaussian and nonGaussian
photon-number entangled states in a noisy channel / M. Allegra, P. Giorda, M. Paris. - In: INTERNATIONAL JOURNAL OF QUANTUM INFORMATION. - ISSN 0219-7499. - 9:Suppl. 1(2011), pp. 27-38. [10.1142/S0219749911007009]
Abstract:
We consider photon-number entangled states (PNES) and study the degradation of their
entanglement in a noisy channel, using different separability criteria and a recently proposed
measure of nonGaussianity as key tools. Upon comparing Gaussian and nonGaussian states
within the class, we collect some evidence that Gaussian states are maximally robust against
noise, i.e. the complete loss of entanglement occurs in maximal time. However, the gap with respect to nonGaussian states is negligible for su±ciently high energy of the states.
Tipologia IRIS:
01 - Articolo su periodico
Keywords:
nonGaussianity ; entanglement ; noisy quantum channel
Elenco autori:
M. Allegra, P. Giorda, M. Paris
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