19 citations · 37 across the 4 of their papers we have counts for
14 papers · 1 filter
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…
How confused can an entanglement witness be to be still persuasive
Jan Roik, Karol Bartkiewicz, Antonín Černoch +1
Detection of entangled states is essential in both fundamental and applied quantum physics. However, this task proves to be challenging especially for general quantum states. One c…
Experimentally friendly approach towards nonlocal correlations in multisetting N -partite Bell scenarios
Artur Barasiński, Antonín Černoch, Wiesław Laskowski +3
In this work, we study a recently proposed operational measure of nonlocality by Fonseca and Parisio~[Phys. Rev. A 92, 030101(R) (2015)] which describes the probability of violatio…
Experimental diagnostics of entanglement swapping by a collective entanglement test
Vojtěch Trávníček, Karol Bartkiewicz, Antonín Černoch +1
The paper reports on experimental diagnostics of entanglement swapping protocol by means of collective entanglement witness. Our approach is suitable to detect disturbances occurri…
Experimental hybrid quantum-classical reinforcement learning by boson sampling: how to train a quantum cloner
Jan Jašek, Kateřina Jiráková, Karol Bartkiewicz +3
We report on experimental implementation of a machine-learned quantum gate driven by a classical control. The gate learns optimal phase-covariant cloning in a reinforcement learnin…
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…