The 'Delayed Choice Quantum Eraser' Neither Erases Nor Delays
arXiv:1905.03137 · doi:10.1007/s10701-019-00278-8
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.
Final version, to appear in Foundations of Physics
References in corpus (1)
Cited by in corpus (9)
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- The Delayed-Choice Quantum Eraser Leaves No Choice
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- Complementarity relations of a delayed-choice quantum eraser in a quantum circuit
- Demonstration of Scully-Drühl-type quantum erasers on quantum computers
- Delayed-choice quantum erasers and the Einstein-Podolsky-Rosen paradox
- Forward-backward stochastic simulations: Q-based model for measurement and Bell-nonlocality consistent with weak local realistic premises
- Structural constraint on delayed-choice quantum eraser architectures