Entanglement, EPR-correlations, Bell-nonlocality, and Steering

Details Entanglement, EPR-correlations, Bell-nonlocality, and Steering Entanglement, EPR-correlations, Bell-nonlocality, and Steering

2007-09-04

arxiv.org/abs/0709.0390v2

Phys. Rev. A 76, 052116 (2007)

Physics

Quantum Physics

REVtex, 19 pages, 2 figures. v2 minor changes and corrections, published in PRA

Scientific paper

10.1103/PhysRevA.76.052116

In a recent work [Phys. Rev. Lett. {\bf 98}, 140402 (2007)] we defined ``steering'', a type of quantum nonlocality that is logically distinct from both nonseparability and Bell-nonlocality. In the bipartite setting, it hinges on the question of whether Alice can affect Bob's state at a distance through her choice of measurement. More precisely and operationally, it hinges on the question of whether Alice, with classical communication, can convince Bob that they share an entangled state, under the circumstances that Bob trusts nothing that Alice says. We argue that if she can, then this demonstrates the nonlocal effect first identified in the famous EPR paper [Phys. Rev. {\bf 47}, 777 (1935)] as a universal effect for pure entangled states. This ability of Alice to remotely prepare Bob's state was subsequently called steering by Schr\"odinger, whose terminology we adopt. The phenomenon of steering has been largely overlooked, and prior to our work had not even been given a rigorous definition that is applicable to mixed states as well as pure states. Armed with our rigorous definition, we proved that steerable states are a strict subset of the entangled states, and a strict superset of the states that can exhibit Bell-nonlocality. In this work we expand on these results and provide further examples of steerable states. We also elaborate on the connection with the original EPR paradox.

Affiliated with

Also associated with

No associations

Rating

Entanglement, EPR-correlations, Bell-nonlocality, and Steering does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Entanglement, EPR-correlations, Bell-nonlocality, and Steering, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Entanglement, EPR-correlations, Bell-nonlocality, and Steering will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-414412