Present Does Not Decide Past Retroactively---Novel Delayed-Choice Experiments

Hui Peng^,

Cite this paper:
Hui Peng. Present Does Not Decide Past Retroactively---Novel Delayed-Choice Experiments. International Journal of Physics. 2021; 9(1):48-52. doi: 10.12691/ijp-9-1-6

Abstract

The interpretations of the delayed-choice experiments suggest that photons ¡°retroactively decide¡± to travel as particles or as waves from the time of its emission. To test the interpretations thoroughly, we propose and perform novel extended-delayed-choice experiments. The experiments are designed for easier to set up, carry out and reach meaningful results without ambiguity. The experimental results show the following: (A) The present does not decide the past retroactively, i.e., the causality holds; (B) Bohr¡¯s complementarity principle is challenged; (C) photons behave as particle before striking on a double-slit/cross-double-slit; (D) Particle nature is intrinsic.

Keywords:
delayed-choice experiment causality Mach-Zehnder-Interferometer double-slit experiment Complementarity principle wave-particle duality

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