2023/06/26 by Alexandre Feller, Feller, Alexandre, Benjamin Roussel +5
Computer Science · Physics and Astronomy · #FOS: Physical sciences #Quantum Information and Cryptography #Quantum Mechanics and Applications #Quantum Physics (quant-ph) #Quantum optics and atomic interactions
paper · pdf · doi:10.48550/arxiv.2306.14745
openalex publication_date 2023/06/26 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The emergence of an objective classical picture is the core question of quantum Darwinism. How does this reconstructed classical picture depends on the resources available to observers? In this Letter, we develop an experimentally relevant model of a qubit coupled dispersively to a transmission line and use time-frequency signal processing techniques to understand if and how the emergent classical picture is changed when we have the freedom to choose the fragment decomposition and the type of radiation sent to probe the system. We show the crucial role of correlations in the reconstruction procedure and point to the importance of studying the type of measurements that must be done to access an objective classical data.