2017/04/30 by C. López, C. E. López, F. Lastra
Computer Science · Physics and Astronomy · #Classical limit #Metastability #Physics #Quantum #Quantum Information and Cryptography #Quantum Mechanics and Applications #Quantum decoherence #Quantum dissipation #Quantum dynamics #Quantum entanglement #Quantum mechanics #Quantum system #Qutrit #Spectroscopy and Quantum Chemical Studies #Statistical physics #quant-ph
paper · pdf · doi:10.1103/physreva.96.062112
published as Phys. Rev. A 96, 062112 (2017)
arxiv created 2017/05/01 · openalex publication_date 2017/12/11 · arxiv updated 2017/12/20 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We study the dynamics of quantum and classical correlations in a two-qutrit system coupled to independent reservoirs. In particular, we address 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 freeze 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-reservoir 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.