Wave-Particle Realism in Quantum-Controlled Interferometers Assisted by Entanglement.

The article focuses on analyzing wave-particle realism in quantum-controlled interferometers assisted by entanglement, particularly within delayed-choice experimental setups. It extends the entanglement-assisted delayed-choice experiment by modifying the causal order of operations and incorporating postselection, enabling the examination of wave and particle realism at intermediate stages of quantum evolution rather than solely from final measurement outcomes. Using a contextual realism quantifier, the study demonstrates that wave and particle realism depend sensitively on the physical context, including quantum correlations and causal structure, and obey entropic complementarity relations bounded by entanglement. These findings highlight that quantum realism is a context-dependent property intrinsic to the system's evolution, refining the interpretation of Bohr's complementarity principle and offering new insights for foundational quantum research and information protocols.