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Squeezing light with optomechanical and spin-light quantum interfaces
Gian-Luca Schmid, Manel Bosch Aguilera, Chun Tat Ngai +6
We investigate squeezing of light through quantum-noise-limited interactions with two different material systems: an ultracold atomic spin ensemble and a micromechanical membrane.…
Effective Faraday interaction between light and nuclear spins of Helium-3 in its ground state: a semiclassical study
Matteo Fadel, Philipp Treutlein, Alice Sinatra
We derive the semiclassical evolution equations for a system consisting of helium-3 atoms in the metastable state interacting with a light field far-detuned from the $2^3S-2…
Electromagnetically Induced Transparency and Optical Pumping in the Hyperfine Paschen-Back Regime
Roberto Mottola, Gianni Buser, Philipp Treutlein
We report spectroscopy experiments of rubidium vapor in a high magnetic field under conditions of electromagnetically induced transparency (EIT) and optical pumping. The 1.1 T stat…
Optical Memory in a Microfabricated Rubidium Vapor Cell
Roberto Mottola, Gianni Buser, Philipp Treutlein
Scalability presents a central platform challenge for the components of current quantum network implementations that can be addressed by microfabrication techniques. We demonstrate…
Einstein-Podolsky-Rosen experiment with two Bose-Einstein condensates
Paolo Colciaghi, Yifan Li, Philipp Treutlein +1
In 1935, Einstein, Podolsky and Rosen (EPR) conceived a Gedankenexperiment which became a cornerstone of quantum technology and still challenges our understanding of reality and lo…
Optical coherent feedback control of a mechanical oscillator
Maryse Ernzer, Manel Bosch Aguilera, Matteo Brunelli +5
Feedback is a powerful and ubiquitous technique both in classical and quantum system control. Its standard implementation relies on measuring the state of a system, processing the…