. "Tobias, Hubert" . "41115" . . "http://journals.aps.org/prl/pdf/10.1103/PhysRevLett.113.223603" . "US - Spojen\u00E9 st\u00E1ty americk\u00E9" . "Je\u017Eek, Miroslav" . "Quantum non-Gaussian Depth of Single-Photon States" . . . "11"^^ . . . . "We introduce and experimentally explore the concept of the non-Gaussian depth of single-photon states with a positiveWigner function. The depth measures the robustness of a single-photon state against optical losses. The directly witnessed quantum non-Gaussianity withstands significant attenuation, exhibiting a depth of 18 dB, while the nonclassicality remains unchanged. Quantum non-Gaussian depth is an experimentally approachable quantity that is much more robust than the negativity of the Wigner function. Furthermore, we use it to reveal significant differences between otherwise strongly nonclassical singlephoton sources."@en . . . "2" . "Physical Review Letters" . . "Quantum non-Gaussian Depth of Single-Photon States"@en . . . "6"^^ . "15310" . . . "000348132200004" . . . "States; Single-Photon; Depth; non-Gaussian; Quantum"@en . "P(7E13032), P(GA13-20319S), P(LH13248), S" . "Quantum non-Gaussian Depth of Single-Photon States" . "[91F6B4F880E6]" . "5"^^ . . "Mi\u010Duda, Michal" . . . . . "Straka, Ivo" . "RIV/61989592:15310/14:33150306" . . "We introduce and experimentally explore the concept of the non-Gaussian depth of single-photon states with a positiveWigner function. The depth measures the robustness of a single-photon state against optical losses. The directly witnessed quantum non-Gaussianity withstands significant attenuation, exhibiting a depth of 18 dB, while the nonclassicality remains unchanged. Quantum non-Gaussian depth is an experimentally approachable quantity that is much more robust than the negativity of the Wigner function. Furthermore, we use it to reveal significant differences between otherwise strongly nonclassical singlephoton sources." . "Lachman, Luk\u00E1\u0161" . "Quantum non-Gaussian Depth of Single-Photon States"@en . "RIV/61989592:15310/14:33150306!RIV15-MSM-15310___" . "Weihs, Gregor" . "Solomon, Glenn S" . . "Filip, Radim" . . "Predejevi\u0107, Ana" . "Mikov\u00E1, Martina" . "113" . "0031-9007" . "10.1103/PhysRevLett.113.223603" . . "Butschek, Lorenz" .