Hannover 2020 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 19: Quantum Optics II
Q 19.5: Talk
Tuesday, March 10, 2020, 15:15–15:30, f342
Observation of squeezed light from weakly coupled emitters — Jakob Hinney1, Adarsh Prasad1, Sahand Mahmoodian2,3, Klemens Hammerer2, Arno Rauschenbeutel4, Samuel Rind1, Philipp Schneeweiss4, Anders Sørensen3, Jürgen Volz4, and •Max Schemmer4 — 1TU Wien, Atominstitut, Austria — 2Leibniz University Hannover, Germany — 3Niels Bohr Institute, University of Copenhagen, Denmark — 4Humboldt-Universität zu Berlin, Germany
We show that the propagation of resonant light through an ensemble of weakly coupled emitters results in the generation of non-classical light. This manifest itself in a change in photon statistics [1]. Here, we present a study of the properties of the transmitted light through the ensemble via measuring the quadrature-squeezing of the transmitted light. The emitters consist of laser cooled Cesium atoms that evanescently couple to the light in the nanofiber. The dependence of the squeezing on input power and input detuning agrees well with theoretical predictions based on [2]. Furthermore, we are able to resolve the squeezing spectrum which reveals the spectral characteristics of the correlated photons that are generated in this process and which lie at the origin of the non-classical nature of the process.
[1] Prasad, A., et al. arXiv 1911.09701 2019
[2] Mahmoodian, S., et al. Phys. Rev. Lett. 2018