Non-Markovianity and memory of the initial state
| Autor: | Hinarejos, Margarida, Bañuls, Mari-Carmen, Pérez, Armando, de Vega, Inés |
|---|---|
| Rok vydání: | 2016 |
| Předmět: | |
| Zdroj: | J. Phys. A: Math. Theor. 50 335301 (2017) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1088/1751-8121/aa7972 |
| Popis: | We explore in a rigorous manner the intuitive connection between the non-Markovianity of the evolution of an open quantum system and the performance of the system as a quantum memory. Using the paradigmatic case of a two-level open quantum system coupled to a bosonic bath, we compute the recovery fidelity, which measures the best possible performance of the system to store a qubit of information. We deduce that this quantity is connected, but not uniquely determined, by the non-Markovianity, for which we adopt the BLP measure proposed in \cite{breuer2009}. We illustrate our findings with explicit calculations for the case of a structured environment. Comment: 9 pages, 8 figures |
| Databáze: | arXiv |
| Externí odkaz: |
|