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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Perturbative approach in the frequency domain for the intensity correlation spectrum in electromagnetically induced transparency

Texto completo
Autor(es):
Florez, H. M. [1] ; Gonzalez, C. [1] ; Martinelli, M. [1]
Número total de Autores: 3
Afiliação do(s) autor(es):
[1] Univ Sao Paulo, Inst Fis, BR-05315970 Sao Paulo, SP - Brazil
Número total de Afiliações: 1
Tipo de documento: Artigo Científico
Fonte: Physical Review A; v. 94, n. 1 JUL 6 2016.
Citações Web of Science: 1
Resumo

Correlation spectroscopy has been proposed as a spectroscopic technique for measuring the coherence between the ground states in electromagnetically induced transparency (EIT). While in the time domain the steep dispersion in the EIT condition accounts for the robustness of the correlation linewidth against power broadening, such physical insight was not directly established in the frequency domain. We propose a perturbative approach to describe the correlation spectroscopy of two noisy lasers coupled to a Lambda transition in cold atoms, leading to EIT. Such approach leads to an analytical expression that maps the intensity correlation directly in terms of the absorption and dispersion of the light fields. Low and high perturbative regimes are investigated and demonstrate that, for coherent light sources, the first-order term in perturbation expansion represents a sufficient description for the correlation. Sideband resonances are also observed, showing the richness of the frequency domain approach. (AU)

Processo FAPESP: 11/22410-0 - Processamento de informação quântica em variáveis contínuas
Beneficiário:Hans Marin Florez
Linha de fomento: Bolsas no Brasil - Doutorado
Processo FAPESP: 04/13587-0 - Informação quântica e emaranhamento com átomos em redes óticas
Beneficiário:Marcelo Martinelli
Linha de fomento: Auxílio à Pesquisa - Regular