报告题目：All-Versus-Nothing Proof of Einstein-Podolsky-Rosen Steering
报 告 人：吴春凤博士
报告地点：环境学院东侧量子科学中心6楼
报告时间：周二（3月1日）下午2:00
主讲人简介：
吴春凤，新加坡科技设计大学讲师。2006年新加坡国立大学博士毕业，此后在新加坡量子科技中心从事多年研究工作，包括新加坡千禧基金会博士后等。主要从事量子信息和量子计算方向的研究，在Phys. Rev. Lett., Phys. Rev. A, Sci. Rep. 等期刊发表文章30余篇。
Einstein-Podolsky-Rosen steering is a form of quantum correlation intermediate between entanglement and Bell nonlocality. In analogy to ‘‘all-versusnothing’’ proofs of Bell nonlocality, we have presented a proof of steering without inequalities. We have shown that, given any two-qubit entangled state, the existence of certain projective measurement by Alice so that Bob’s normalized conditional states can be regarded as two different pure states provides a criterion for Alice-to-Bob steerability. We have also demonstrated that the all-versus-nothing proof of Einstein-Podolsky-Rosen steering can be tested by measuring the projective probabilities. Through the bound of probabilities imposed by local-hidden-state model, the proposed test shows that steering can be detected by the all-versus-nothing argument experimentally even in the presence of imprecision and errors. Einstein-Podolsky-Rosen steering has also lead to enhanced version of Gisin’s theorem, namely local realism is violated by all states with the following steering property that each observer is able to steer the other qubits into two different pure states.
