| Texto completo | |
| Autor(es): |
Alves, Gabriel O.
;
Santos, Marcelo A. F.
;
Landi, Gabriel T.
Número total de Autores: 3
|
| Tipo de documento: | Artigo Científico |
| Fonte: | PHYSICAL REVIEW A; v. 110, n. 5, p. 12-pg., 2024-11-14. |
| Resumo | |
We investigate a quantum thermometry scheme-based collision model with Gaussian systems. A key open question of these schemes concerns the scaling of the quantum Fisher information (QFI) with the number of ancillas. In qubit-based implementations this question is difficult to assess, due to the exponentially growing size of the Hilbert space. Here we focus on Gaussian collision models, which allow for the scaling of the QFI to be evaluated for arbitrarily large sizes. This numerical flexibility enables us to explore the thermometric properties of the model for a wide range of configurations. Despite the infinite Markov order of the stochastic process of the model, we provide a simple phenomenological analysis for the behavior of the QFI, estimating the asymptotic Fisher information density and how the transient effects of correlations for an increasing number of ancillas depend on the physical parameters of the model. (AU) | |
| Processo FAPESP: | 17/07973-5 - Termodinâmica e tecnologias de informação utilizando sistemas quânticos de variáveis contínuas |
| Beneficiário: | Gabriel Teixeira Landi |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |
| Processo FAPESP: | 18/12813-0 - Termodinâmica quântica de sistemas bosônicos |
| Beneficiário: | Gabriel Teixeira Landi |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |
| Processo FAPESP: | 20/16050-0 - Metrologia quântica estroboscópica |
| Beneficiário: | Gabriel Oliveira Alves |
| Modalidade de apoio: | Bolsas no Brasil - Mestrado |
| Processo FAPESP: | 17/50304-7 - Entropy production in non-equilibrium quantum processes: from foundations to quantum technologies |
| Beneficiário: | Gabriel Teixeira Landi |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |