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arXiv:1905.03137quant-ph

The 'Delayed Choice Quantum Eraser' Neither Erases Nor Delays

R. E. Kastner

Early discovery. Linked by one identifiable commenter. This paper is outside the main ranking; a mention is not an endorsement.

Abstract

It is demonstrated that 'quantum eraser' (QE) experiments do not erase any information. Nor do they demonstrate retrocausation or 'temporal nonlocality' in their 'delayed choice' form, beyond standard EPR correlations. It is shown that the erroneous erasure claims arise from assuming that the improper mixed state of the signal photon physically prefers either the 'which way' or 'both ways' basis, when no such preference is warranted. The latter point is illustrated through comparison of the QE spatial state space with the spin-1/2 space of particles in the EPR-spin experiment.

arXiv comments
Final version, to appear in Foundations of Physics
Journal reference
Found Phys (2019) 49: 717
DOI
doi:10.1007/s10701-019-00278-8
Subjects
quant-phQuantum Physics

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Linked by 1 identifiable commenter in 2 comments across 2 threads, from Oct 2019 to Sep 2021.

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Discussed in comments2 threads

  1. Quantum mechanics and our part in creating reality 1 comment

    • Ok, I don't know what are your belief and intuition about temporal causality that you need to suspend. I don't think there is any mystery. Another reference: https://arxiv.org/abs/1905.03137 "The 'Delayed Choice Quantum Eraser' Neither Erases Nor Delays" - R. E.Kastner She has…

      kgwgkView on HNParent context

  2. Double Slit Experiment No Mystery 1 comment

    • The ‘Delayed Choice Quantum Eraser’ Neither Erases Nor Delays https://arxiv.org/pdf/1905.03137.pdf

      kgwgkView on HNParent context

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