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- FZU ‒ Institute of Physics of the Academy of Sciences of the Czech RepublicCZ325 papers
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19 papers · 2 filters
Continuous-variable quantum key distribution with a leakage from state preparation
Ivan Derkach, Vladyslav C. Usenko, Radim Filip
We address side-channel leakage in a trusted preparation station of continuous-variable quantum key distribution with coherent and squeezed states. We consider two different scenar…
Nonclassical photon pairs from warm atomic vapor using a single driving laser
L. Podhora, P. Obšil, I. Straka +2
Generation of nonclassical light is an essential tool for quantum optics research and applications in quantum information technology. We present realization of the source of noncla…
Gaussian intrinsic entanglement for states with partial minimum uncertainty
Ladislav Mišta, Klára Baksová
We develop a theory of a quantifier of bipartite Gaussian entanglement called Gaussian intrinsic entanglement (GIE) which was proposed recently in [L. Mišta {\it et al.}, Phys. Rev…
Experimental identification of non-classicality of noisy twin beams and other related two-mode states
Ievgen I. Arkhipov, Jan Peřina
Different non-classicality criteria expressed in the form of inequalities among intensity moments and elements of photon-number distributions are applied to noisy twin beams and ot…
Higher-order sub-Poissonian-like nonclassical fields: Theoretical and experimental comparison
Jan Perina, Vaclav Michalek, Ondrej Haderka
Criteria defining higher-order sub-Poissonian-like fields are given using five different quantities: moments of (I) integrated intensity, (II) photon number, (III) integrated-inten…
Multiparameter Quantum Metrology of Incoherent Point Sources: Towards Realistic Superresolution
J. Rehacek, Z. Hradil, B. Stoklasa +4
We establish the multiparameter quantum Cramér-Rao bound for simultaneously estimating the centroid, the separation, and the relative intensities of two incoherent optical point so…