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All incompatible measurements on qubits lead to multiparticle Bell nonlocality
Martin Plávala, Otfried Gühne, Marco Túlio Quintino
Bell nonlocality is a fundamental phenomenon of quantum physics as well as an essential resource for various tasks in quantum information processing. It is known that for the obser…
Newton's laws of motion generating gravity-mediated entanglement
Marta Maria Marchese, Martin Plávala, Matthias Kleinmann +1
The interface between quantum theory and gravity represents still uncharted territory. Recently, some works suggested promising alternative approaches aimed at witnessing quantum f…
Encoding and decoding of information in general probabilistic theories
Teiko Heinosaari, Leevi Leppäjärvi, Martin Plávala
Encoding and decoding are the two key steps in information processing. In this work we study the encoding and decoding capabilities of operational theories in the context of inform…
Simple Information Processing Tasks with Unbounded Quantum Advantage
Teiko Heinosaari, Oskari Kerppo, Leevi Leppäjärvi +1
Communication scenarios between two parties can be implemented by first encoding messages into some states of a physical system which acts as the physical medium of the communicati…
Semi-device-independent certification of number of measurements
Isadora Veeren, Martin Plávala, Leevi Leppäjärvi +1
We develop a method for semi-device-independent certification of number of measurements. We achieve this by testing whether Bob's steering equivalent observables (SEO) can be simul…
Conditions for the compatibility of channels in general probabilistic theory and their connection to steering and Bell nonlocality
Martin Plávala
We derive general conditions for the compatibility of channels in general probabilistic theory. We introduce formalism that allows us to easily formulate steering by channels and B…