Tripartite-entanglement detection through tripartite quantum steering in one-sided and two-sided device-independent scenarios
Physical Review A
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: the one-sided device-independent scenario where one of the parties performs untrusted measurements while the other two parties perform trusted measurements and the two-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 two-sided device-independent scenario is weaker than tripartite steering in the one-sided device-independent scenario by using two families of quantum correlations. That is, these two families of quantum correlations in the two-sided device-independent framework detect tripartite entanglement through tripartite steering for a larger region than that in the one-sided device-independent framework. It is shown that tripartite steering in the two-sided device-independent scenario implies the presence of genuine tripartite entanglement of 2×2×2 quantum system, even if the correlation does not exhibit genuine nonlocality or genuine steering.
Jebaratnam, C.; Das, Debarshi; Roy, Arup; Mukherjee, Amit; Bhattacharya, Some Sankar; Bhattacharya, Bihalan; Riccardi, Alberto; and Sarkar, Debasis, "Tripartite-entanglement detection through tripartite quantum steering in one-sided and two-sided device-independent scenarios" (2018). Journal Articles. 1287.