"2"^^ . "LIGHT; COHERENT; EQUIVALENCE; RADIATION-FIELD"@en . "Detecting Quantum States with a Positive Wigner Function beyond Mixtures of Gaussian States"@en . . . "Mi\u0161ta, Ladislav" . . "RIV/61989592:15310/11:10224631" . . . . "106" . "0031-9007" . . . . "We propose a criterion giving a sufficient condition for quantum states of a harmonic oscillator not to be expressible as a convex mixture of Gaussian states. This nontrivial property is inherent to, e. g., a single-photon state and the criterion thus allows one to reveal a signature of the state even in quantum states with a positive Wigner function. The criterion relies on directly measurable photon number probabilities and enables detection of this manifestation of a single-photon state in quantum states produced by solid-state single-photon sources in a weak coupling regime." . "20" . "RIV/61989592:15310/11:10224631!RIV12-MSM-15310___" . "Detecting Quantum States with a Positive Wigner Function beyond Mixtures of Gaussian States" . . . . "Physical Review Letters" . . "We propose a criterion giving a sufficient condition for quantum states of a harmonic oscillator not to be expressible as a convex mixture of Gaussian states. This nontrivial property is inherent to, e. g., a single-photon state and the criterion thus allows one to reveal a signature of the state even in quantum states with a positive Wigner function. The criterion relies on directly measurable photon number probabilities and enables detection of this manifestation of a single-photon state in quantum states produced by solid-state single-photon sources in a weak coupling regime."@en . . . "15310" . . "P(7E08028), P(GA202/08/0224), P(ME10156), Z(MSM6198959213)" . "Detecting Quantum States with a Positive Wigner Function beyond Mixtures of Gaussian States" . . "Filip, Radim" . "[F21E70544268]" . "4"^^ . "Detecting Quantum States with a Positive Wigner Function beyond Mixtures of Gaussian States"@en . "000290727600001" . . . . . . "193679" . "2"^^ . "US - Spojen\u00E9 st\u00E1ty americk\u00E9" .