Can we reveal quantum nonlocality of (all) local entangled states?

Date/Time: Fri., 16th December 2016 16:00-17:00 - (room 1320 (3F), Science Building 4, Hongo-campus, University of Tokyo)

Speaker: Dr. Marco Tulio Quentino (University of Tokyo)

In this talk we will discuss how quantum correlation concepts (Entanglement, Einstein-Podolski-Rosen steering, and Bell nonlocality) relate in scenarios where the parties share many copies of the given quantum state and/or access to local filtering operations. We will show that while quantum entanglement cannot be created by local filtering operations the situation is different for Bell Nonlocality and EPR-Steering by presenting the phenomenon of "Hidden Nonlocalty". We will then present the phenomenon of "Super Activation of Quantum EPR steering", where a single copy of a given bipartite state is EPR-Unsteerable (hence, also Bell local), but two copies of this state is EPR-steerable. Moreover, we also show that when large copies of the initial state are considered., every two-qubit and qubit-qutrit quantum state is EPR-steerable. We finish the talk by asking, "In which "natural" scenarios we have the equivalence between Entanglement, EPR-steering, and Bell nonlocality?"