Demystifying the delayed-choice quantum eraser

@article{Qureshi2019DemystifyingTD,
  title={Demystifying the delayed-choice quantum eraser},
  author={Tabish Qureshi},
  journal={European Journal of Physics},
  year={2019},
  volume={41}
}
  • T. Qureshi
  • Published 11 August 2019
  • Physics
  • European Journal of Physics
The delayed-choice quantum eraser has long been a subject of controversy, and has been looked at as being incomprehensible to having retro-causal effect in time. Here the delayed-choice quantum eraser is theoretically analyzed using standard quantum mechanics. Employing a Mach–Zehnder interferometer, instead of a conventional two-slit interference, brings in surprising clarity. Some common mistakes in interpreting the experiment are pointed out. It is demonstrated that in the delayed mode there… 

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