Super-Activation of Quantum Steering
arXiv:1610.01037 · doi:10.1103/PhysRevA.94.062123
Abstract
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 -copy steerable. In particular we show that any two-qubit and qubit-qutrit entangled states is -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 -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.
8 pages, 1 figure
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