Experimental demonstration of the violations of Mermin's and
  Svetlichny's inequalities for W- and GHZ-class of states
Violation of Mermin's and Svetlichny's inequalities can rule out the
predictions of local hidden variable theory and can confirm the existence of
true nonlocal correlation for n-particle pure quantum systems. Here we
demonstrate the experimental violation of the above inequalities for W- and
GHZ-class of states. We use IBM's five-qubit quantum computer for experimental
implementation of these states and illustration of inequalities' violations.
Our results clearly show the violations of both Mermin's and Svetlichny's
inequalities for W and GHZ states respectively. Being a superconducting
qubit-based quantum computer, the platform used here opens up the opportunity
to explore multipartite inequalities which is beyond the reach of other
existing technologies.
Manoranjan Swain Amit Rai Bikash K. Behera Prasanta K. Panigrahi