Experimental quantification of the entanglement of noisy twin beams
arXiv:2007.08310 · doi:10.1103/PhysRevApplied.14.024003
Abstract
Gradual loss of the entanglement of a twin beam containing around 25 photon pairs with the increasing external noise is experimentally investigated. The entanglement is quantified by the non-classicality depths and the non-classicality counting parameters related to several non-classicality criteria. The reduction of intensity moments of the analyzed multi-mode twin beams to single-mode ones allows to determine the negativity as another quantifier of the entanglement. Both the raw photocount histograms and the reconstructed photon-number distributions are analyzed in parallel.
7 pages, 4 figures
References in corpus (7)
- Entanglement in continuous variable systems: Recent advances and current perspectives
- Testing nonclassicality in multimode fields: a unified derivation of classical inequalities
- Full multipartite entanglement of frequency comb Gaussian states
- Highly nonclassical photon statistics in parametric down conversion
- Comparative study of nonclassicality, entanglement, and dimensionality of multimode noisy twin beams
- Experimental detection of nonclassicality of single-mode fields via intensity moments
- Experimental identification of non-classicality of noisy twin beams and other related two-mode states