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arXiv · 2001.11558

Reading a qubit quantum state with a quantum meter: time unfolding of quantum Darwinism and quantum information flux

Salvatore Lorenzo·Mauro Paternostro·G. Massimo Palma
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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

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Salvatore Lorenzo, Mauro Paternostro, G. Massimo Palma. 2020-01-30. Reading a qubit quantum state with a quantum meter: time unfolding of quantum Darwinism and quantum information flux. https://arxiv.org/abs/2001.11558

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