标题： 量子导引的超激活 显示英文标题

标题： Super-Activation of Quantum Steering

摘要： 我们研究了当各方可以对共享的纠缠态的多个副本执行集体测量时的爱因斯坦-波多尔斯基-罗森（EPR）引导问题。 我们推导出一个简单且高效的条件，用于保证一个纠缠态是$k$-拷贝可引导的。 特别是，我们证明了任意两比特和量子比特-量子三比特纠缠态是$k$-拷贝可引导的。 这使我们可以讨论引导的超激活效应，即在一个拷贝情形下不可引导（即存在局域隐藏态模型）的纠缠态，在$k$-拷贝情形下变为可引导。 我们提供了少量拷贝和低维度的例子。 我们的结果表明，在多拷贝情形下，纠缠和引导可能变得等价。 显示英文摘要

摘要： We consider Einstein-Podolsky-Rosen steering in the regime where the parties can perform collective measurements on many copies of a given shared entangled state. We derive a simple and efficient condition for guaranteeing that an entangled state is $k$-copy steerable. In particular we show that any two-qubit and qubit-qutrit entangled states is $k$-copy steerable. This allows us to discuss the effect of super-activation of steering, whereby an entangled state that is unsteerable (i.e., admits a local hidden state model) in the one-copy regime becomes $k$-copy steerable. We provide examples with few copies and low dimensions. Our results give evidence that entanglement and steering could become equivalent in the multi-copy regime.