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

  Articoli su Riviste JCR/ISI  (anno 2014)

Autori:  Gagatsos C.N., Fiurasek J., Zavatta A., Bellini M., Cerf N

Affiliazione Autori:  Quantum Information and Communication, Ecole Polytechnique de Bruxelles, Université Libre de Bruxelles, 1050 Brussels, Belgium; Department of Optics, Palacký University, 17. listopadu 1192/12, CZ-771 46 Olomouc, Czech Republic; Istituto Nazionale di Ottica, INO-CNR, Largo Enrico Fermi, 6, I-50125 Firenze, Italy; Department of Physics, LENS, University of Firenze, 50019 Sesto Fiorentino, Firenze, Italy

Riassunto:  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-Gaussian states, 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.

Rivista/Giornale:  PHYSICAL REVIEW A
Volume n.:  89 (6)      Pagine da: 062311  a: 062311
Ulteriori informazioni:  C.N.G. acknowledges financial support from Wallonia-Brussels International via the Excellence Grants program and gratefully thanks the Department of Optics, Palacky University for the fruitful collaboration and hospitality during his visit in February 2013. This work was supported by the F.R.S.-FNRS under the ERA-NET CHIST-ERA project HIPERCOM, by the Belgian Federal IAP program under Project No. P7/35 Photonics@be, and by the European Social Fund and Czech Ministry of Education under Project No. EE2.3.20.0060 of Operational Program Education for Competitiveness. J.F. acknowledges support by the Czech Science Foundation (Project No. P205/12/0577). M. B. and A.Z. acknowledge support from the EU under ERA-NET CHIST-ERA project QSCALE.
DOI: 10.1103/PhysRevA.89.062311

*Impact Factor della Rivista: (2014) 2.808   *Citazioni: 8
data tratti da "WEB OF SCIENCE" (marchio registrato di Thomson Reuters) ed aggiornati a:  14/07/2019

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