Improved Nonlocality Certification via Bouncing between Bell Operators and Inequalities
The paper introduces an optimization scheme to enhance Bell nonlocality certification by flexibly mapping Bell inequalities to Hamiltonians and vice versa. This method allows researchers to find new inequalities with better classical bounds, making it more robust against experimental noise. A practical demonstration on a 73-qubit superconducting model showed this technique can increase the classical bound, enabling nonlocality detection without readout corrections.