We investigate the divisibility properties of the tensor products Λ^(1)_t⊗Λ^(2)_t of open quantum dynamics Λ^(1,2)_t with time-dependent generators. These dynamical maps emerge from a compound open system S1 + S2 that interacts with its own environment in such a way that memory effects remain when the environment is traced away. This study is motivated by the following intriguing effect: one can have Backflow of Information (BFI) from the environment to S1 + S2 without the same phenomenon occurring for either S1 and S2. We shall refer to this effect as the Superactivation of BFI (SBFI).

Open Quantum Dynamics: Memory Effects and Superactivation of Backflow of Information

Benatti, Fabio
;
Nichele, Giovanni
2024-01-01

Abstract

We investigate the divisibility properties of the tensor products Λ^(1)_t⊗Λ^(2)_t of open quantum dynamics Λ^(1,2)_t with time-dependent generators. These dynamical maps emerge from a compound open system S1 + S2 that interacts with its own environment in such a way that memory effects remain when the environment is traced away. This study is motivated by the following intriguing effect: one can have Backflow of Information (BFI) from the environment to S1 + S2 without the same phenomenon occurring for either S1 and S2. We shall refer to this effect as the Superactivation of BFI (SBFI).
2024
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https://www.mdpi.com/2227-7390/12/1/37
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11368/3071160
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