RQC Seminar

89th RQC Seminar

  • Speaker

    Dr. Huan-Yu Ku
    ( Department of Physics and Center for Quantum Frontiers of Research ＆ Technology (QFort),
    National Cheng Kung University )

  • Date

    16:00-17:00, October 27, 2023 (Friday)

  • Venue

    Hybrid(ZOOM・ Wako Main Research 3F 345-347 Seminar Room C01）

  • Title

    Complete classification of steerability under local filters and its relation with measurement incompatibility

  • Inquiries

    rqc_info[at]ml.riken.jp

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 operaiton.

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