Nonlinear spectroscopy of raman scattering

Alexander V. Baranov, Яков Семенович Бобович, V.I. Petrov

Jin Guo, Mingzhen Wang, Qiaozhi Yu +13 more

Sham N. Dixit, Mark R. Hermann, Tom Karr

Chun-Hua Yuan, L. Q. Chen, Jietai Jing +2 more

We present a scheme to obtain the coherently enhanced Raman scattering in atomic vapor which is induced by a spin wave initially written by a weak write laser. The enhancement of Raman scattering is dependent on the number and the spatial distribution of the flipped atoms generated by the weak write laser. Such an enhanced Raman scattering may have practical applications in quantum information, nonlinear optics, and laser spectroscopy because of its simplicity.

Alexander A. Lisyansky, E. S. Andrianov, Alexey P. Vinogradov +1 more

Frank Schlawin, Manuel Gessner

Abstract Stimulated Raman scattering (SRS) is a powerful technique for imaging and spectroscopy, in particular in chemistry and biology. By introducing a full quantum description, we determine the ultimate quantum limits of precision and optimal strategies to approach them within the rigorous framework offered by quantum metrology. This approach reveals optimal uses of squeezed states, and the possibility of enhancing the resolution beyond recent experiments. Our work establishes a basis for approaching quantum precision limits in SRS and integrating nonlinear spectroscopy and imaging with emerging quantum technologies.