基于证据推理与模型认知素养及跨学科概念的“原电池”教学

以“原电池”教学为例,通过设置紧密联系的任务,结合手持技术,探究“如何获得稳定工作的电池”和“如何获得高效的电池”的原理。充分运用物理、化学已有的认知模型,进行跨学科概念的教学,培养学生从宏观和微观水平上收集证据、分析证据的能力,发展“证据推理与模型认知”的学科核心素养。     

Bound entanglement and teleportation for arbitrary bipartite systems

We construct bound entangled states that are entangled but from which no entanglement can De olstilled It all parues are allowed only by performing local operations and classical communications. Moreover, as applications, a detailed example is presented. This example can illuminate that the fidelity of transmission using a bound entangled state is not bigger than a classical scheme.