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- FZU ‒ Institute of Physics of the Academy of Sciences of the Czech RepublicCZ325 papers
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19 papers · 1 filter
Simulation of Motion of Many Ions in a Linear Paul Trap
Martin Oral, Lukáš Slodička, Ondřej Číp
The quadrupole linear Paul trap is one of the key instruments in building highly stable atomic clocks. However, a frequency reference based on a single trapped ion is limited in st…
Cross talk compensation in multimode continuous-variable entanglement distribution
Olena Kovalenko, Vladyslav C. Usenko, Radim Filip
Two-mode squeezed states are scalable and robust entanglement resources for continuous-variable and hybrid quantum information protocols at a distance. We consider the effect of a…
Frequency multiplexed entanglement for continuous-variable quantum key distribution
Olena Kovalenko, Young-Sik Ra, Yin Cai +4
Quantum key distribution with continuous variables already uses advantageous high-speed single-mode homodyne detection with low electronic noise at room temperature. Together with…
K-Step Opacity in Discrete Event Systems: Verification, Complexity, and Relations
Jiří Balun, Tomáš Masopust
Opacity is a property expressing whether a system may reveal its secret to a passive observer (an intruder) who knows the structure of the system but has a limited observation of i…
Experimental demonstration of optimal probabilistic enhancement of quantum coherence
Robert Stárek, Michal Mičuda, Michal Kolář +2
We theoretically and experimentally investigate conditional enhancement of overall coherence of quantum states by probabilistic quantum operations that apply to the input state a q…
Two-beam light with simultaneous anticorrelations in photon-number fluctuations and sub-Poissonian statistics
Jan Perina, Vaclav MIchalek, Radek Machulka +1
Two twin beams with a shared signal beam and separated idler beams are used together with the photon-number-resolving postselection in the signal beam to arrive at two coupled beam…