Title :
Experimental investigation of the transition between Autler-Townes splitting and electromagnetically-induced transparency models
Author :
Giner, L. ; Veissier, L. ; Sparkes, B. ; Sheremet, A. ; Nicolas, Alejandro ; Mishina, O. ; Scherman, Michael ; Burks, S. ; Shomroni, I. ; Kupriyanov, D.V. ; Lam, Ping Koy ; Giacobino, E. ; Laurat, J.
Author_Institution :
Lab. Kastler Brossel, Univ. Pierre et Marie Curie, Paris, France
Abstract :
Summary form only given. If in general the transparency of an initially absorbing medium for a probe field is increased by the presence of a control field on an adjacent transition, two very different processes can be invoked to explain it. One of them is a quantum Fano interference between two paths in the three-level system, which occurs even at low control intensity and gives rise to electromagnetically-induced transparency (EIT), the other one is the appearance of two dressed states in the excited level at higher control intensity, corresponding to the Autler-Townes splitting (ATS). This distinction is particularly critical for instance for the implementation of slow light or optical quantum memories. In a recent paper, P. M. Anisimov, J. P. Dowling and B. C. Sanders proposed a quantitative test to objectively discerning ATS from EIT. We experimentally investigated this test with cold atoms and demonstrated that it is very sensitive to the specific properties of the medium. In this study, we use an ensemble of cold Cesium atoms trapped in a MOT, interacting with light via a Λ-type scheme on the D2 line. Absorption profiles are obtained for various values of the control Rabi frequency Ω between 0.1Γ and 4Γ, where Γ is the natural linewidth.
Keywords :
Stark effect; caesium; dressed states; light interference; quantum optics; radiation pressure; self-induced transparency; slow light; Autler-Townes splitting model; EIT; MOT; Rabi frequency; absorption profiles; cold atoms; dressed states; electromagnetically-induced transparency model; initially absorbing medium; optical quantum memories; quantum Fano interference; slow light; three-level system; trapped cold cesium atoms; Absorption; Biological system modeling; Data models; Educational institutions; Frequency control; Nonhomogeneous media; Physics;
Conference_Titel :
Lasers and Electro-Optics Europe (CLEO EUROPE/IQEC), 2013 Conference on and International Quantum Electronics Conference
Conference_Location :
Munich
Print_ISBN :
978-1-4799-0593-5
DOI :
10.1109/CLEOE-IQEC.2013.6801633