2009/06/02 by Rafael Drampyan, R. Drampyan, Szymon Pustelny +3 · 1 citation
Chemistry · Computer Science · Physics and Astronomy · #Atomic and Subatomic Physics Research #Atomic physics #Chemistry #Coherent control #Coupling (piping) #Electromagnetically induced transparency #Faraday effect #Ground state #Lambda #Laser #Magnetic field #Nonlinear Dynamics and Pattern Formation #Optics #Physics #Polarization (electrochemistry) #Quantum mechanics #Quantum optics and atomic interactions #Rubidium #Zeeman effect #physics.atom-ph #physics.optics
paper · pdf · doi:10.1103/physreva.80.033815
7 pages, 12 figures, submitted to Phys. Rev. A
arxiv created 2009/06/02 · openalex publication_date 2009/09/10 · arxiv updated 2015/05/13 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We report on experimental and theoretical study of the nonlinear Faraday effect under conditions of electromagnetically induced transparency at the 5S1/2\ensuremath→5P3/2\ensuremath→5D5/2 two-photon transition in rubidium vapor. These transitions realize the inverted Y model which combines the \ensuremathΛ and ladder systems. Strong nonlinearity allowing for large rotation angles of a probe beam tuned to the S\ensuremath→P transition was obtained by creation of quantum superpositions of magnetic sublevels (Zeeman coherences) in the rubidium ground state (\ensuremathΛ scheme). Additionally, electromagnetically induced transparency was accomplished in a ladder scheme by acting with a second strong coupling laser on the P\ensuremath→D transition. Under conditions of a two-photon resonance the rotation was significantly reduced, which is interpreted as a competition between the coherent processes. The effect was observed in sub-Gauss magnetic fields and could be used for efficient coherent control of generation of the ground-state coherences, e.g., for controlling the polarization state of the probe light.