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Updated: Jan 30, 2026

Gradient Echo Quantum Memory in Warm Atomic Vapor
Published on: November 11, 2013
How Quantum Mechanics can consistently describe the use of itself
Dustin Lazarovici1, Mario Hubert2
1Université de Lausanne, Section de Philosophie, Lausanne, 1015, Switzerland. dustin.lazarovici@unil.ch.
Abstract:
We discuss the no-go theorem of Frauchiger and Renner based on an "extended Wigner's friend" thought experiment which is supposed to show that any single-world interpretation of quantum mechanics leads to inconsistent predictions if it is applicable on all scales. We show that no such inconsistency occurs if one considers a complete description of the physical situation. We then discuss implications of the thought experiment that have not been clearly addressed in the original paper, including a tension between relativity and nonlocal effects predicted by quantum mechanics. Our discussion applies in particular to Bohmian mechanics.
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