Monitoring of the process of system information broadcasting in time

TL;DR

This paper investigates how classical information emerges from quantum systems through processes like orthogonalization and decoherence, analyzing their time scales and environmental dependence to understand information broadcasting.

Contribution

It introduces a model using quantum state discrimination to explain the emergence of classical information from quantum states, focusing on the process of information broadcasting.

Findings

Orthogonalization and decoherence are key to classical information emergence.

Time scales of these processes depend on environmental interactions.

Quantum state discrimination effectively models information broadcasting.

Abstract

One of the fundamental problems of modern physics is how the classical world, the 2nd Law of Thermodynamics and the whole irreversibility emerges from the quantum reality with reversible evolution. This relates to the problem of measurement transforming quantum, non-copyable data, towards intersubjective, copyable classical knowledge. We use the quantum state discrimination to show in a central system model how it's evolution leads to the broadcasting of the classical information. We analyze the process of orthogonalization and decoherence, their time scales and dependence on the environment.