Objectivity (or lack thereof): Comparison between predictions of quantum Darwinism and spectrum broadcast structure

Thao P. Le; Alexandra Olaya-Castro

doi:10.1103/physreva.98.032103

Objectivity (or lack thereof): Comparison between predictions of quantum Darwinism and spectrum broadcast structure

Physical Review A ◽

10.1103/physreva.98.032103 ◽

2018 ◽

Vol 98 (3) ◽

Cited By ~ 7

Author(s):

Thao P. Le ◽

Alexandra Olaya-Castro

Keyword(s):

Quantum Darwinism

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Application of quantum Darwinism to a structured environment

Physical Review A ◽

10.1103/physreva.96.062105 ◽

2017 ◽

Vol 96 (6) ◽

Cited By ~ 15

Author(s):

Graeme Pleasance ◽

Barry M. Garraway

Keyword(s):

Quantum Darwinism

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Reading a Qubit Quantum State with a Quantum Meter: Time Unfolding of Quantum Darwinism and Quantum Information Flux

Open Systems & Information Dynamics ◽

10.1142/s1230161219500239 ◽

2019 ◽

Vol 26 (04) ◽

pp. 1950023

Author(s):

Salvatore Lorenzo ◽

Mauro Paternostro ◽

G. Massimo Palma

Keyword(s):

Quantum Information ◽

Harmonic Oscillator ◽

Quantum System ◽

Quantum State ◽

Common Theme ◽

Quantum Harmonic Oscillator ◽

Collision Model ◽

Single Qubit ◽

Quantum Darwinism

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.

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