Stable and metastable freezing of classical correlations in qutrits
| Autor: | C. E. López, F. Lastra |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Physics
Quantum Physics Quantum decoherence Basis (linear algebra) Analytical expressions FOS: Physical sciences 01 natural sciences 010305 fluids & plasmas Metastability Quantum mechanics 0103 physical sciences Limit (mathematics) Statistical physics Quantum Physics (quant-ph) 010306 general physics Quantum dissipation Quantum |
| Popis: | We study the dynamics of quantum and classical correlations in a two-qutrit system coupled to independent reservoirs. In particular, we addressed the differences in the dynamics of Markovian and non-Markovian regimes and show that for specific initial states, classical correlations exhibit abrupt changes along the dynamics. A particular sudden change occurs when the classical correlations freezes to a certain value at a given time, revealing the apparition of a pointer-state basis. After this given time, the decoherence only affects quantum correlations. Here we identify two regimes in the decoherence dynamics: a mixed regime when both classical and quantum correlations decay and a quantum regime when only quantum correlations decay. We show that the freezing of classical correlations can be stable or metastable depending on the system-reservoirs parameters. In the long-time limit, we find analytical expressions for the pointer-state basis the system settles in, and consequently for classical and quantum correlations. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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