Quantum theory of the classical: Einselection, envariance, quantum darwinism and extantons

WH Zurek - Entropy, 2022 - mdpi.com
Core quantum postulates including the superposition principle and the unitarity of evolutions
are natural and strikingly simple. I show that—when supplemented with a limited version of …

Eavesdropping on the decohering environment: Quantum darwinism, amplification, and the origin of objective classical reality

A Touil, B Yan, D Girolami, S Deffner, WH Zurek - Physical review letters, 2022 - APS
“How much information about a system S can one extract from a fragment F of the
environment E that decohered it?” is the central question of Quantum Darwinism. To date …

Redundantly amplified information suppresses quantum correlations in many-body systems

D Girolami, A Touil, B Yan, S Deffner, WH Zurek - Physical review letters, 2022 - APS
We establish bounds on quantum correlations in many-body systems. They reveal what sort
of information about a quantum system can be simultaneously recorded in different parts of …

Observing Schrödinger's cat with artificial intelligence: emergent classicality from information bottleneck

Z Zhang, YZ You - Machine Learning: Science and Technology, 2024 - iopscience.iop.org
We train a generative language model on the randomized local measurement data collected
from Schrödinger's cat quantum state. We demonstrate that the classical reality emerges in …

One dimensional gapped quantum phases and enriched fusion categories

L Kong, XG Wen, H Zheng - Journal of High Energy Physics, 2022 - Springer
A bstract In this work, we use Ising chain and Kitaev chain to check the validity of an earlier
proposal in arXiv: 2011.02859 that enriched fusion (higher) categories provide a unified …

Bootstrap embedding on a quantum computer

Y Liu, OR Meitei, ZE Chin, A Dutt, M Tao… - Journal of Chemical …, 2023 - ACS Publications
We extend molecular bootstrap embedding to make it appropriate for implementation on a
quantum computer. This enables solution of the electronic structure problem of a large …

Jordan products of quantum channels and their compatibility

M Girard, M Plávala, J Sikora - Nature communications, 2021 - nature.com
Given two quantum channels, we examine the task of determining whether they are
compatible—meaning that one can perform both channels simultaneously but, in the future …

Branching states as the emergent structure of a quantum universe

A Touil, F Anza, S Deffner, JP Crutchfield - Quantum, 2024 - quantum-journal.org
Quantum Darwinism builds on decoherence theory to explain the emergence of classical
behavior in a fundamentally quantum universe. Within this framework we prove two crucial …

Device-independent witness for the nonobjectivity of quantum dynamics

D Poderini, G Rodari, G Moreno, E Polino, R Nery… - Physical Review A, 2023 - APS
Quantum Darwinism offers an explanation for the emergence of classical objective features
(those we are used to at macroscopic scales) from quantum properties at the microscopic …

[HTML][HTML] Quantitative bounds to propagation of quantum correlations in many-body systems

D Girolami, M Minervini - Physics Letters A, 2024 - Elsevier
We investigate how much information about a quantum system can be simultaneously
communicated to independent observers, by establishing quantitative limits to bipartite …