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- W4313447495 abstract "Entanglement distribution task encounters a problem of how the initial entangled state should be prepared in order to remain entangled the longest possible time when subjected to local noises. In the realm of continuous-variable states and local Gaussian channels it is tempting to assume that the optimal initial state with the most robust entanglement is Gaussian too; however, this is not the case. Here we prove that specific non-Gaussian two-mode states remain entangled under the effect of deterministic local attenuation or amplification (Gaussian channels with the attenuation factor/power gain $kappa_i$ and the noise parameter $mu_i$ for modes $i=1,2$) whenever $kappa_1 mu_2^2 + kappa_2 mu_1^2 < frac{1}{4}(kappa_1 + kappa_2) (1 + kappa_1 kappa_2)$, which is a strictly larger area of parameters as compared to where Gaussian entanglement is able to tolerate noise. These results shift the ``Gaussian world'' paradigm in quantum information science (within which solutions to optimization problems involving Gaussian channels are supposed to be attained at Gaussian states)." @default.
- W4313447495 created "2023-01-06" @default.
- W4313447495 creator A5065756001 @default.
- W4313447495 creator A5080716942 @default.
- W4313447495 date "2022-12-30" @default.
- W4313447495 modified "2023-09-27" @default.
- W4313447495 title "Superior Resilience of Non-Gaussian Entanglement against Local Gaussian Noises" @default.
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- W4313447495 doi "https://doi.org/10.3390/e25010075" @default.
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