Revisiting the experimental test of Mermin's inequalities at IBMQ

Abstract

Bell-type inequalities allow for experimental testing of local hidden variable theories. In the present work we show the violation of Mermin's inequalities in IBM's five-qubit quantum computers, ruling out the local realism hypothesis in quantum mechanics. Furthermore, our numerical results show significant improvement with respect to previous implementations. The circuit implementation of these inequalities is also proposed as a way of assessing the reliability of different quantum computers.

References in corpus (5)

• Bell-type inequalities to detect true n-body non-separability
• Experimental test of Mermin inequalities on a 5-qubit quantum computer
• Five Experimental Tests on the 5-Qubit IBM Quantum Computer
• Experimental demonstration of the violations of Mermin's and Svetlichny's inequalities for W- and GHZ-class of states
• Tight upper bound for the maximal expectation value of the Mermin operators

Cited by in corpus (6)

• Conditionally rigorous mitigation of multiqubit measurement errors
• Testing Scalable Bell Inequalities for Quantum Graph States on IBM Quantum Devices
• Non-adaptive measurement-based quantum computation on IBM Q
• Generating multipartite nonlocality to benchmark quantum computers
• Detecting and Eliminating Quantum Noise of Quantum Measurements
• Phase Analysis on the Error Scaling of Entangled Qubits in a 53-Qubit System