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In our recent work, we have proposed a directly measurable parameter quantifying eff ective indistinguishability of particles used as information carriers in quantum information transfer and processing [M.Miková et al., Phys. Rev. A 87, 042327 (2013); arXiv:1209.0908]. We experimentally tested its relevance for photons
Tým vědců kolem doc. Radima Filipa z Katedry optiky PřF UP si znovu posvítil na foton. Nejprve v prestižním americkém časopise Physical Review Letters [1] publikoval nové kritérium neklasických projevů slabých proudů fotonů, po šesti měsících pak toto kritérium v nové
We reported on experimental verification of quantum non-Gaussianity of a heralded single photon state with positive Wigner function [Phys. Rev. Lett. 107, 213602 (2011)]. We unambiguously demonstrated that the generated state cannot be expressed as a mixture of Gaussian states.
Approximation of the error function, $${\rm erf}(z) = \frac{2}{\sqrt{\pi}}\int_{-\infty}^{z}\!{\rm d}x\,{\rm e}^{-x^2},$$ using elementary functions could be useful, particularly for PDC and spatial walk-off simulations… Wikipedia, Sergei Winitzki’s paper