Coarse graining a non-Markovian collisional model
Carregando...
Data
Título da Revista
ISSN da Revista
Título de Volume
Editor
Universidade Federal de Minas Gerais
Descrição
Tipo
Artigo de periódico
Título alternativo
Primeiro orientador
Membros da banca
Resumo
The dynamics of systems subjected to noise is called Markovian in the absence of memory effects, i.e., when its immediate future depends only on its present. Time correlations in the noise source may generate non-Markovian effects that, sometimes, can be erased by appropriately coarse graining the time evolution of the system. In general, the coarse-graining time tCG is taken to be much larger than the correlation time τ but no direct relation between them is established. Here we analytically obtain a relation between tCG and τ for the dynamics of a
qubit subjected to a time-correlated environment. Our results can be applied in principle to any distribution of the environmental correlations and can be tested through a collisional model where the qubit sequentially interacts with correlated qutrits.
Abstract
Assunto
Mecânica quântica, Processos não-Markovianos
Palavras-chave
Quantum mechanics, Non-Markovian processes
Citação
Departamento
Curso
Endereço externo
https://journals.aps.org/pra/abstract/10.1103/PhysRevA.95.032117