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- FZU ‒ Institute of Physics of the Academy of Sciences of the Czech RepublicCZ50 papers
- Czech Academy of SciencesCZ35 papers
- Argonne National LaboratoryUS34 papers
- Centre National de la Recherche ScientifiqueFR34 papers
- Fermi National Accelerator LaboratoryUS34 papers
- Radboud University NijmegenNL34 papers
- Sorbonne UniversitéFR34 papers
- Charles UniversityCZ33 papers
- Consejo Nacional de Investigaciones Científicas y TécnicasAR33 papers
- Institute of Nuclear Physics, Polish Academy of SciencesPL33 papers
- Institut National de Physique Nucléaire et de Physique des ParticulesFR33 papers
- Instituto de Física CorpuscularES33 papers
10 papers · 2 filters
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…
Quantum bath refrigeration towards absolute zero: unattainability principle challenged
Michal Kolář, David Gelbwaser-Klimovsky, Robert Alicki +1
A minimal model of a quantum refrigerator (QR), i.e. a periodically phase-flipped two-level system permanently coupled to a finite-capacity bath (cold bath) and an infinite heat du…
High spatial entanglement via chirped quasi-phase-matched optical parametric down-conversion
Jiří Svozilík, Jan Peřina, Juan P. Torres
By making use of the spatial shape of paired photons, parametric down-conversion allows the generation of two-photon entanglement in a multidimensional Hilbert space. How much enta…
Entanglement of Gaussian states and the applicability to quantum key distribution over fading channels
Vladyslav C. Usenko, Bettina Heim, Christian Peuntinger +4
Entanglement properties of Gaussian states of light as well as the security of continuous variable quantum key distribution with Gaussian states in free-space fading channels are s…