English

Tripartite entanglement detection through tripartite quantum steering in one-sided and two-sided device-independent scenarios

Quantum Physics 2018-08-02 v5

Abstract

In the present work, we study tripartite quantum steering of quantum correlations arising from two local dichotomic measurements on each side in the two types of partially device-independent scenarios: 11-sided device-independent scenario where one of the parties performs untrusted measurements while the other two parties perform trusted measurements and 22-sided device-independent scenario where one of the parties performs trusted measurements while the other two parties perform untrusted measurements. We demonstrate that tripartite steering in the 22-sided device-independent scenario is weaker than tripartite steering in the 11-sided device-independent scenario by using two families of quantum correlations. That is these two families of quantum correlations in the 22-sided device-independent framework detect tripartite entanglement through tripartite steering for a larger region than that in the 11-sided device-independent framework. It is shown that tripartite steering in the 22-sided device-independent scenario implies the presence of genuine tripartite entanglement of 2×2×22\times 2 \times 2 quantum system, even if the correlation does not exhibit genuine nonlocality or genuine steering.

Keywords

Cite

@article{arxiv.1704.08162,
  title  = {Tripartite entanglement detection through tripartite quantum steering in one-sided and two-sided device-independent scenarios},
  author = {C. Jebaratnam and Debarshi Das and Arup Roy and Amit Mukherjee and Some Sankar Bhattacharya and Bihalan Bhattacharya and Alberto Riccardi and Debasis Sarkar},
  journal= {arXiv preprint arXiv:1704.08162},
  year   = {2018}
}

Comments

14 pages, 4 figures, accepted for publication in Physical Review A