Latest Research

Home>Latest Research>The Quantum Eraser Paradox

November 29, 2021

Return to Latest Research

The Quantum Eraser Paradox

By Colm Bracken, Jonte R. Hance, Sabine Hossenfelder.

Submitted to arXiv on 17 November 2021.

The Delayed-Choice Quantum Eraser experiment is commonly interpreted as implying that in quantum mechanics a choice made at one time can influence an earlier event. We here suggest an extension of the experiment that results in a paradox when interpreted using a local realist interpretation combined with backward causation (“retrocausality”). We argue that resolving the paradox requires giving up the idea that, in quantum mechanics, a choice can influence the past, and that it instead requires a violation of Statistical Independence without retrocausality. We speculate what the outcome of the experiment would be.

Read the whole paper here.