Detecting entanglement of unknown states by violating the Clauser–Horne–Shimony–Holt inequality

Stochastic optimization algorithms for quantum applications

“…It has been shown that CSPSA can deliver better results in the estimation of pure states [19] and is robust against noise [21]. It has been applied to entanglement estimation [16], quantum state discrimination [26], and violation of the Clauser-Horne-Shimony-Holt inequality [94].…”