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A: Fachverband Atomphysik
A 35: Precision Spectroscopy of atoms and ions
A 35.2: Poster
Thursday, March 14, 2019, 16:15–18:15, S Fobau Physik
Coherent Control of Thermal Atoms with Photonic Crystal Cavities — •Hadiseh Alaeian, Ralf Ritter, Artur Skljarow, Harald Kübler, Tilman Pfau, and Robert Löw — 5.Physikalisches Institut and Center for Integrated Quantum Science and Technology, Universität Stuttgart, Pfaffenwaldring 57, D-70569 Stuttgart, Germany
Unless proper modifications are employed, the atom-photon interaction is an inefficient process in free space. Historically, optical and superconducting cavities have been used successfully to increase the atom-photon interaction probability for the optical and microwave photons, respectively. With recent advancements in nanofabrication, integrated Nano-photonic devices have been used to enhance the quantum optical phenomena in several solid-state based platforms like quantum dots and vacancy centers. In this work, we present our recent theoretical and experimental efforts on the integration of high-Q cavities with thermal atoms beyond the perturbative limit. In particular, we discuss about an optimized cavity in a Si3N4 photonic crystal supporting a high-Q mode with small volume at 780nm, i.e. 5S→5P of rubidium. Through a detailed Monte-Carlo calculation incorporating all the device effects, including the Purcell and Casimir-Polder, we demonstrate the feasibility of reaching a strong atom-light coupling down to a single photon.