Figure 3
From: Simplified quantum optical Stokes observables and Bell’s theorem
Quantum predictions for expectation value of CH expression for the ‘sign’ approach (blue curve) and rate approach14 (green dashed curve) as a function of the amplification gain \(\Gamma \) for BSV state. The numerical results were obtained with a cut-off of the expansion of the BSV state at the term \(|{\psi ^{n=50}}\rangle \). The upper bound of CH inequality for the ‘sign’ approach is violated in the whole range of \(\Gamma \) covered in the figure, while the violation of the inequality in the case of the normalized Stokes operators is quickly damped and after that CH expression goes asymptotically from bellow to the classical bound.
