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https://locus.ufv.br//handle/123456789/12599
Tipo: | Artigo |
Título: | Non-markovianity Hierarchy of Gaussian processes and quantum amplification |
Autor(es): | Souza, Leonardo A. M. Liuzzo-Scorpo, Pietro Roga, Wojciech Bernardes, Nadja K. Adesso, Gerardo |
Abstract: | We investigate the dynamics of Gaussian states of continuous variable systems under Gaussianity-preserving channels. We introduce a hierarchy of such evolutions encompassing Markovian and weakly and strongly non-Markovian processes and provide simple criteria to distinguish between the classes, based on the degree of positivity of intermediate Gaussian maps. We present an intuitive classification of all one-mode Gaussian channels according to their non-Markovianity degree and show that weak non-Markovianity has an operational significance, as it leads to a temporary phase-insensitive amplification of Gaussian inputs beyond the fundamental quantum limit. Explicit examples and applications are discussed. |
Palavras-chave: | Non-Markovianity hierarchy Gaussian processes Quantum Amplification |
Editor: | Physical Review Letters |
Tipo de Acesso: | Open Access |
URI: | https://doi.org/10.1103/PhysRevLett.118.050401 http://www.locus.ufv.br/handle/123456789/12599 |
Data do documento: | 31-Jan-2017 |
Aparece nas coleções: | Artigos |
Arquivos associados a este item:
Arquivo | Descrição | Tamanho | Formato | |
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PhysRevLett.118.050401.pdf | texto completo | 208,26 kB | Adobe PDF | Visualizar/Abrir |
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