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SCIENTIFIC REPORTS 7, 42539 (2017)

ISSN: 2045-2322, SCI

Simultaneous observation of particle and wave behaviors of entangled photons

Zhong-Xiao Man, Yun-JieXia & Nguyen Ba An

We theoretically study wave-particle duality of two entangled photons in the spirit of quantum version of delayed-choice experiments using Hadamard gate controlled by the quantum state of an ancilla and show that the two photons may globally exhibit particle-like, wave-like or simultaneously both particlelike and wave-like behavior. We prove that the obtained results cannot be satisfactorily explained by any hidden-variable theory. We also propose an efficient and experimentally feasible scheme without using any ancilla and controlled-gates to directly (i.e., without postselection) observe the two-photon wave-particle superposed state as well as the continuous transition of their behavior between wave-like one and particle-like one.

DOI: 10.1038/srep42539