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Quantum Speed Limit for Change of Basis
Moein Naseri, Chiara Macchiavello, Dagmar Bruß +2
Quantum speed limits provide ultimate bounds on the time required to transform one quantum state into another. Here, we extend the notion of quantum speed limits to collections of…
Two instances of random access code in the quantum regime
Nitica Sakharwade, Michał Studziński, Michał Eckstein +1
We consider two classes of quantum generalisations of Random Access Code (RAC) and study lower bounds for probabilities of success for such tasks. It provides a useful framework fo…
Optimal Measurement Structures for Contextuality Applications
Yuan Liu, Ravishankar Ramanathan, Karol Horodecki +2
The Kochen-Specker (KS) theorem is a corner-stone result in the foundations of quantum mechanics describing the fundamental difference between quantum theory and classical non-cont…
The rank of contextuality
Karol Horodecki, Jingfang Zhou, Maciej Stankiewicz +6
Quantum contextuality is one of the most recognized resources in quantum communication and computing scenarios. We provide a new quantifier of this resource, the rank of contextual…
Multipartite channel assemblages
Michał Banacki, Ravishankar Ramanathan, Paweł Horodecki
Motivated by the recent studies on post-quantum steering, we generalize the notion of bipartite channel steering by introducing the concept of multipartite no-signaling channel ass…
Catalysis in Charging Quantum Batteries
Ricard Ravell Rodriguez, Borhan Ahmadi, Pawel Mazurek +3
We propose a novel approach for optimization of charging of harmonic oscillators (quantum batteries) coupled to a harmonic oscillator (charger), driven by laser field. We demonstra…