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Heralded noiseless amplification and attenuation of non-Gaussian states of light

par Gagatsos, Christos ;Fiurasek, Jaromir ;Zavatta, Alessandro;Bellini, Marco;Cerf, Nicolas
Référence Physical Review A, 89, 062311
Publication Publié, 2014-06-09

Article révisé par les pairs

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Résumé :

We examine the behavior of non-Gaussian states of light under the action of probabilistic noiseless amplification and attenuation. Surprisingly, we find that the mean-field amplitude may decrease in the process of noiseless amplification—or may increase in the process of noiseless attenuation, a counterintuitive effect that Gaussian states cannot exhibit. This striking phenomenon could be tested with experimentally accessible non-Gaussianstates, such as single-photon added coherent states. We propose an experimental scheme, which is robust with respect to the major experimental imperfections, such as inefficient single-photon detection and imperfect photon addition. In particular, we argue that the observation of mean-field amplification by noiseless attenuation should be feasible with current technology.