112-1 SEMINAR 古煥宇(台師大物理)-1121004

Time:1121004 (Wed.) 14:20~16:20
Speaker:Prof.古煥宇(Huan-Yu Ku) 國立臺灣師範大學物理學系/Department of Physics, National Taiwan Normal University
Title:Complete classification of steerability under local filters and its relation with measurement incompatibility
Abstract:Quantum steering is a central resource for one-sided device-independent quantum information. It is manipulated via one-way local operations and classical communication, such as local filtering on the trusted party. Here, we provide a necessary and sufficient condition for a steering assemblage to be transformable into another via local filtering. We characterize the equivalence classes with respect to filters in terms of the steering equivalent observables (SEO), first proposed to connect the problem of steerability and measurement incompatibility. We provide an efficient method to compute the extractable steerability that is maximal via local filters and show that it coincides with the incompatibility of the SEO. We also show that measurement incompatibility cannot be distilled under the filtering operation.
Place:S102, Gongguan Campus, NTNU
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