Violating Bell's inequalities in vacuum


B Reznik, A Retzker, and J Silman. 4/14/2005. “Violating Bell's inequalities in vacuum.” Physical Review a, 71, 4. Publisher's Version


We employ an approach wherein the ground state entanglement of a relativistic free scalar field is directly probed in a controlled manner. The approach consists of having a pair of initially nonentangled detectors locally interact with the vacuum for a finite duration T, such that the two detectors remain causally disconnected, and then analyzing the resulting detector mixed state. We show that the correlations between arbitrarily far-apart regions of the vacuum cannot be reproduced by a local hidden-variable model, and that as a function of the distance L between the regions, the entanglement decreases at a slower rate than ∼exp[−(L∕cT)3].
See also: 2010 and before
Last updated on 07/04/2021