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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

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

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Florez, H. M. [1] ; Gonzalez, C. [1] ; Martinelli, M. [1]
Total Authors: 3
[1] Univ Sao Paulo, Inst Fis, BR-05315970 Sao Paulo, SP - Brazil
Total Affiliations: 1
Document type: Journal article
Source: Physical Review A; v. 94, n. 1 JUL 6 2016.
Web of Science Citations: 1

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)

FAPESP's process: 11/22410-0 - Quantum information processing in continuous variables
Grantee:Hans Marin Florez
Support type: Scholarships in Brazil - Doctorate