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20 papers · 1 filter
Unbounded violation of quantum steering inequalities
M. Marciniak, A. Rutkowski, Z. Yin +2
We construct steering inequalities which exhibit unbounded violation. The concept was to exploit the relationship between steering violation and uncertainty relation. To this end w…
Quantum advantage for distributed computing without communication
L. Czekaj, M. Pawlowski, T. Vertesi +3
Understanding the role that quantum entanglement plays as a resource in various information processing tasks is one of the crucial goals of quantum information theory. Here we prop…
No quantum realization of extremal no-signaling boxes
Ravishankar Ramanathan, Jan Tuziemski, Michał Horodecki +1
Pure states are very important in any theory since they represent states of maximal information about the system within the theory. Here, we show that no non-trivial (not local rea…
Construction and properties of a class of private states in arbitrary dimensions
Adam Rutkowski, Michał Studziński, Piotr Ćwikliński +1
We present a construction of quantum states in dimension that has at least 1 dit of ideal key, called private dits (pdits), which covers most of the known examples of private b…
Bounds on quantum nonlocality via partial transposition
Karol Horodecki, Gláucia Murta
We explore the link between two concepts: the level of violation of a Bell inequality by a quantum state and discrimination between two states by means of restricted classes of ope…
Rice-Mele model with topological solitons in an optical lattice
Anna Przysiezna, Omjyoti Dutta, Jakub Zakrzewski
Attractive ultra-cold fermions trapped in a one-dimensional periodically shaken opticla lattices are considered. For an appropriate resonant shaking the system realizes paradigmati…