Reading a qubit quantum state with a quantum meter: time unfolding of quantum Darwinism and quantum information flux
Quantum Physics
2020-02-03 v1
Abstract
Quantum non Markovianity and quantum Darwinism are two phenomena linked by a common theme: the flux of quantum information between a quantum system and the quantum environment it interacts with. In this work, making use of a quantum collision model, a formalism initiated by Sudarshan and his school, we will analyse the efficiency with which the information about a single qubit gained by a quantum harmonic oscillator, acting as a meter, is transferred to a bosonic environment. We will show how, in some regimes, such quantum information flux is inefficient, leading to the simultaneous emergence of non Markovian and non darwinistic behaviours
Keywords
Cite
@article{arxiv.2001.11558,
title = {Reading a qubit quantum state with a quantum meter: time unfolding of quantum Darwinism and quantum information flux},
author = {Salvatore Lorenzo and Mauro Paternostro and G. Massimo Palma},
journal= {arXiv preprint arXiv:2001.11558},
year = {2020}
}
Comments
8 pages,8 figures