7 papers
When Isolated Quantum Systems Appear Classical
Thiago R. de Oliveira, Pedro S. Correia, Tiago Debarba +3
The emergence of classical behavior and the origin of thermal equilibrium are two central problems in the foundations of physics. In the standard accounts, both phenomena are typic…
Spectral analysis of equilibration: information leakage in isolated quantum systems
André T. Cesário, Marcos G. Alpino, Reinaldo O. Vianna +1
We develop a unified dynamical-spectral framework for equilibration in isolated quantum systems based on a subspace coarse-graining approach. Central to our formulation is the Leak…
Thermodynamic Constraints on the Emergence of Intersubjectivity in Quantum Systems
Alessandro Candeloro, Tiago Debarba, Felix C. Binder
Ideal quantum measurement requires divergent thermodynamic resources. This is a consequence of the third law of thermodynamics, which prohibits the preparation of the measurement p…
Thermodynamic Constraints on Information Transmission in Quantum Ensembles
André T. Cesário, Tiago Debarba
The processing of quantum information is limited by fundamental physical constraints on how information can be encoded, transmitted, and extracted. In particular, the non-orthogona…
A Complexity-Based Approach to Quantum Observable Equilibration
Marcos G. Alpino, Tiago Debarba, Reinaldo O. Vianna +1
We investigate the role of a statistical complexity measure to assign equilibration in isolated quantum systems. While unitary dynamics preserve global purity, expectation values o…
Unknown measurement statistics cannot be redundantly copied using finite resources
Tiago Debarba, Marcus Huber, Nicolai Friis
Measurements can be viewed as interactions between a measured system and a pointer system that imprint information about the system on the pointer. For so-called unbiased interacti…