| 公告主旨 |
Joint CQSE and CASTS Seminar |
| 公告內容 |
Joint CQSE and CASTS Seminar
TIME: Jan. 6, 2017, 14:30 ~ 15:30
TITLE: Quantifying quantum steerability and measurement incompatibility using uncharacterized devices
SPEAKER: Prof. Yeong-Cherng Liang 梁永成教授
Department of Physics, National Cheng Kung University
國立成功大學物理系
PLACE: Rm716, CCMS & New Physics Building, NTU
臺大凝態大樓/物理新館 R716
Abstract:
We introduce the concept of assemblage moment matrices, i.e., a collection of matrices of expectation values, each associated with a conditional quantum state obtained in a steering experiment. We demonstrate how it can be used for quantum state and measurement characterization in a device-independent manner, i.e., without invoking any assumption about the measurement nor the preparation device. Specifically, we show how the method can be used to lower bound the steerability of an underlying quantum state directly from the observed correlation between measurement outcomes. In addition, by proving a quantitative relationship between steering robustness and the recently introduced incompatibility robustness, our approach also allows for a device-independent quantification of the incompatibility （i.e., non-joint-mesurability） between various measurements performed in a Bell-type experiment.
**Sponsored by Center for Quantum Science and Engineering （CQSE） （量子科學與工程研究中心） and Center for Advanced Study in Theoretical Sciences （CASTS） （理論科學高等研究中心）, National Taiwan University.
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| 活動地點 |
物理學系/凝態科學研究中心Rm716, CCMS & New Physics Building, NTU |
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