Bell-nonlocality sudden birth with intrinsic decoherence

Abstract

Taking into account the intrinsic decoherence effect, we study the tripartite nonlocality of a three-qubit Heisenberg spin system with three-body interaction by the generalized Bell inequality. We have found that there is Bell-nonlocality sudden birth, and the three-body interaction is vital to achieving it.

Environment-induced quantum correlations in a driven two-qubit system

“…That is to say, the emergence of Bell nonlocality must fall back on the external field. A vivid illustration may be seen in figure 3 where the interesting phenomena of Bell-nonlocality sudden death [22] and sudden birth [71] can be observed. Figure 3(a) is the case without external field and figure 3(b) the one of external field.…”