| Texto completo | |
| Autor(es): |
Mendonca, Taysa M.
[1]
;
Souza, Alexandre M.
[2]
;
de Assis, Rogerio J.
[3]
;
de Almeida, Norton G.
[3]
;
Sarthour, Roberto S.
[2]
;
Oliveira, Ivan S.
[2]
;
Villas-Boas, Celso J.
[1]
Número total de Autores: 7
|
| Afiliação do(s) autor(es): | [1] Univ Fed Sao Carlos, Dept Fis, BR-13565905 Sao Carlos, SP - Brazil
[2] Ctr Brasileiro Pesquisas Fis, BR-22290180 Rio De Janeiro, RJ - Brazil
[3] Univ Fed Goias, Inst Fis, BR-74001970 Goiania, Go - Brazil
Número total de Afiliações: 3
|
| Tipo de documento: | Artigo Científico |
| Fonte: | PHYSICAL REVIEW RESEARCH; v. 2, n. 4 DEC 24 2020. |
| Citações Web of Science: | 0 |
| Resumo | |
We employ reservoir engineering technique to build an artificial thermal bath at arbitrary (effective) negative and positive temperatures for a single spin system. The required interaction engineering is achieved by applying a specific sequence of radio-frequency pulses using nuclear magnetic resonance, while the temperature of the bath can be controlled by appropriate preparation of the initial H-1 nuclear spin state. This artificial reservoir allowed us to implement a single qubit quantum engine that operates at a single reservoir at effective negative temperature and with maximum efficiency, independent of the unitary transformation performed on the qubit system, as long as it changes the qubit state. We measured the population of the carbon spin and the efficiency of our quantum engine, which are in very good agreement with the predicted results. (AU) | |
| Processo FAPESP: | 19/11999-5 - Efeitos coletivos em sistemas atômicos, spins nucleares e eletrodinâmica quântica de cavidades |
| Beneficiário: | Celso Jorge Villas-Bôas |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |
| Processo FAPESP: | 13/04162-5 - Desenvolvimento de sensores quânticos com átomos ultrafrios |
| Beneficiário: | Philippe Wilhelm Courteille |
| Modalidade de apoio: | Auxílio à Pesquisa - Temático |