6533b86ffe1ef96bd12cea0d

RESEARCH PRODUCT

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

Mauro PaternostroSalvatore LorenzoG. Massimo PalmaG. Massimo Palma

subject

Statistics and ProbabilityPhysicsReading (computer)FluxStatistical and Nonlinear PhysicsQuantum Darwinism01 natural sciencesSettore FIS/03 - Fisica Della Materiaquantum non-Markovianity010305 fluids & plasmasQuantum stateQuantum mechanicsQubit0103 physical sciencesQuantum DarwinismQuantum systemcollision modelQuantum information010306 general physicsdecoherenceQuantumMathematical Physics

description

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.

10.1142/s1230161219500239http://www.cnr.it/prodotto/i/448782