Controlled polarization rotation of an optical field in multi-Zeeman-sublevel atoms

Details Controlled polarization rotation of an optical field in multi-Zeeman-sublevel atoms Controlled polarization rotation of an optical field in multi-Zeeman-sublevel atoms

2006-08-30

arxiv.org/abs/quant-ph/0608234v1

Physics

Quantum Physics

28pages, 12figures

Scientific paper

10.1103/PhysRevA.74.033821

We investigate, both theoretically and experimentally, the phenomenon of polarization rotation of a weak, linearly-polarized optical (probe) field in an atomic system with multiple three-level electromagnetically induced transparency (EIT) sub-systems. The polarization rotation angle can be controlled by a circularly-polarized coupling beam, which breaks the symmetry in number of EIT subsystems seen by the left- and right-circularly-polarized components of the weak probe beam. A large polarization rotation angle (up to 45 degrees) has been achieved with a coupling beam power of only 15 mW. Detailed theoretical analyses including different transition probabilities in different transitions and Doppler-broadening are presented and the results are in good agreements with the experimentally measured results.

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