4 papers
Quantifying Measurement Objectivity: A Retrodictive Approach
Jiaxi Kuang, Teruaki Nagasawa, Kensei Torii +1
When can one interpret the outcomes of a quantum measurement as revealing a pre-existing objective property? Using the recently developed formalism of quantum measurement retrodict…
Robustness-based bounds for approximate joint realizations of incompatible quantum channels
Shintaro Minagawa, Ryo Takakura, Kensei Torii
Several quantum channels may fail to admit an exact joint realization, a property known as incompatibility. Channel incompatibility unifies various quantum limitations, such as mea…
Quantum measurement retrodiction and entropic uncertainty relations
Jiaxi Kuang, Kensei Torii, Francesco Buscemi
We study quantum measurement retrodiction using the principle of minimum change. For quantum-to-classical measurement channels, we show that all standard quantum divergences select…
Comparing quantum incompatibility of device sets from an operational perspective
Kensei Torii, Ryo Takakura, Ryotaro Imamura
To effectively utilize quantum incompatibility as a resource in quantum information processing, it is crucial to evaluate how incompatible a set of devices is. In this study, we pr…