5 papers
Quantum measurement incompatibility in subspaces
Roope Uola, Tristan Kraft, Sébastien Designolle +5
We consider the question of characterising the incompatibility of sets of high-dimensional quantum measurements. We introduce the concept of measurement incompatibility in subspace…
Quantifying causal influences in the presence of a quantum common cause
Mariami Gachechiladze, Nikolai Miklin, Rafael Chaves
Quantum mechanics challenges our intuition on the cause-effect relations in nature. Some fundamental concepts, including Reichenbach's common cause principle or the notion of local…
A universal scheme for robust self-testing in the prepare-and-measure scenario
Nikolai Miklin, Michał Oszmaniec
We consider the problem of certification of arbitrary ensembles of pure states and projective measurements solely from the experimental statistics in the prepare-and-measure scenar…
Experimental characterisation of unsharp qubit observables and sequential measurement incompatibility via quantum random access codes
Hammad Anwer, Sadiq Muhammad, Walid Cherifi +3
Unsharp measurements are increasingly important for foundational insights in quantum theory and quantum information applications. Here, we report an experimental implementation of…
Semi-device-independent self-testing of unsharp measurements
Nikolai Miklin, Jakub J. Borkała, Marcin Pawłowski
Unsharp quantum measurements provide a resource in scenarios where one faces the trade-off between information gain and disturbance. In this work we introduce a prepare-transform-m…