8 citations · 8 across the 2 of their papers we have counts for
5 papers
Measuring concurrence in qubit Werner states without aligned reference frame
Kateřina Jiráková, Artur Barasiński, Antonín Černoch +2
The genuine concurrence is a standard quantifier of multipartite entanglement, detection and quantification of which still remains a difficult problem from both theoretical and exp…
Demonstration of quantum controlled teleportation for discrete variables on linear optical devices
Artur Barasiński, Antonín Černoch, Karel Lemr
We report an experimental implementation of tripartite controlled quantum teleportation on the quantum optical devices. The protocol is performed through bi- and tripartite entangl…
Experimental verification of time-order-dependent correlations in three-qubit Greenberger-Horne-Zeilinger-class states
Artur Barasiński, Antonín Černoch, Karel Lemr +1
In this paper, we investigate the genuine three-way nonlocality which is recognized as the strongest form of tripartite correlations. We consider theoretically and experimentally a…
Experimental construction of a versatile four-photon source
Karol Bartkiewicz, Antonín Černoch, Karel Lemr
The paper discusses technical aspects of constructing a highly versatile multi-photon source. The source is able to generate up to four photons which is sufficient for a large numb…
Experimental measurement of nonlinear entanglement witness by hyper-entangling two-qubit states
Vojtěch Trávníček, Karol Bartkiewicz, Antonín Černoch +1
We demonstrate that non-linear entanglement witnesses can be made particularly useful for entanglement detection in hyper-entangled or multilevel states. We test this idea experime…