Preprint
Aug 2026
Entanglement certification via causal-order interferometry in a quantum switch
Entanglement certification is often performed on states that have already undergone noisy transmission or processing. Noise can reduce the surviving entanglement and can also cause a given criterion to fail even when entanglement remains. In this context, the quantum switch, a paradigmatic realization of indefinite cau...
Haojie Wang, Shuheng Liu, Qiongyi He
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