2018/10/16 by A. Relaño, Armando Relaño, Relaño, Armando · 1 citation
Computer Science · Physics and Astronomy · #Advanced Thermodynamics and Statistical Mechanics #FOS: Physical sciences #Quantum Information and Cryptography #Quantum Mechanics and Applications #Quantum Physics (quant-ph) #quant-ph
paper · pdf · doi:10.48550/arxiv.1810.07065
8 pages. No figures. Comments are welcome
arxiv created 2018/10/16 · openalex publication_date 2018/10/16 · arxiv updated 2018/10/17 · openalex created_date 2018/10/26 · openalex updated_date 2026/07/28
We show that the quantum description of measurement based on decoherence fixes the bug in quantum theory discussed in [D. Frauchiger and R. Renner, \em Quantum theory cannot consistently describe the use of itself, Nat. Comm. \bf 9, 3711 (2018)]. Assuming that the outcome of a measurement is determined by environment-induced superselection rules, we prove that different agents acting on a particular system always reach the same conclusions about its actual state.