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41 papers · 1 filter
Constraints on the origin of cosmic rays above eV from large scale anisotropy searches in data of the Pierre Auger Observatory
Pierre Auger Collaboration
A thorough search for large scale anisotropies in the distribution of arrival directions of cosmic rays detected above eV at the Pierre Auger Observatory is reported. For…
Displacement-enhanced continuous-variable entanglement concentration
Ondřej Černotík, Jaromír Fiurášek
We study entanglement concentration of continuous variable Gaussian states by local photon subtractions enhanced by coherent displacements. Instead of the previously considered sym…
Two-photon and three-photon blockades in driven nonlinear systems
Adam Miranowicz, Malgorzata Paprzycka, Yu-xi Liu +2
Photon blockade, in analogy to Coulomb's or phonon blockades, is a phenomenon when a single photon in a nonlinear cavity blocks the transmission of a second photon. This effect can…
Generating superposition of up-to three photons for continuous variable quantum information processing
Mitsuyoshi Yukawa, Kazunori Miyata, Takahiro Mizuta +4
We develop an experimental scheme based on a continuous-wave (cw) laser for generating arbitrary superpositions of photon number states. In this experiment, we successfully generat…
A search for anisotropy in the arrival directions of ultra high energy cosmic rays recorded at the Pierre Auger Observatory
Pierre Auger Collaboration
Observations of cosmic ray arrival directions made with the Pierre Auger Observatory have previously provided evidence of anisotropy at the 99% CL using the correlation of ultra hi…
Search for Point-Like Sources of Ultra-High Energy Neutrinos at the Pierre Auger Observatory and Improved Limit on the Diffuse Flux of Tau Neutrinos
Pierre Auger Collaboration
The Surface Detector array of the Pierre Auger Observatory can detect neutrinos with energy between 10^17 eV and 10^20 eV from point-like sources across the sky south of +55 deg an…