Mainz 2026 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 70: Quantum Optics and Control II
Q 70.4: Talk
Friday, March 6, 2026, 12:00–12:15, P 3
Enhancing Stimulated Raman Scattering Using Kerr Squeezing — •Nikolay Kalinin1, Kilian Scheffter1,2, Seungwon Moon1, Hannah Gallop3, Mehdi Alizadeh3, Adrian F. Pegoraro4, Hanieh Fattahi1,2, Alexey V. Andrianov5, Albert Stolow3, Luis L. Sánchez-Soto1,6,7, and Gerd Leuchs1,2,3 — 1Max Planck Institute for the Science of Light, Erlangen, Germany — 2Physik Department, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany — 3Department of Physics, University of Ottawa, Ottawa, Canada — 4Metrology Research Centre, National Research Council Canada, Ottawa, Canada — 5Nizhny Novgorod, Russia — 6Departamento de Óptica, Facultad de Física, Universidad Complutense, Madrid, Spain — 7Institute for Quantum Studies, Chapman University, Orange, CA, USA
Squeezed light states provide a way to improve signal-to-noise ratio (SNR) in various measurements when classical methods face a limit. In state-of-the-art stimulated Raman scattering (SRS) experiments, such a limit is photodamage of biological samples. Recently, several groups demonstrated SRS with nonclassical light, where a χ(2) nonlinearity was employed to produce squeezing. In this work, we explore an alternative approach based on Kerr (χ(3)) nonlinearity to enhance SRS. Our setup is relatively simple and robust, while also providing a perfect spatial mode for the Raman interaction. By injecting Kerr-squeezed light at 1.5 µm as the pump for the SRS in quartz, we achieve 3.0 dB of SNR improvement, a value on par with other known results.
Keywords: squeezing; stimulated raman scattering; kerr squeezing