Rostock 2019 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 2: Precision Spectroscopy of atoms and ions I (joint session A/Q)
Q 2.1: Vortrag
Montag, 11. März 2019, 10:30–10:45, S HS 2 Physik
An Atomic Lab on a Chip — •Artur Skljarow1, Ralf Ritter1, Wolfram H.P. Pernice2, Harald Kübler1, Tilman Pfau1, Robert Löw1, and Hadiseh Alaeian1 — 15. Physikalisches Institut and Center for Integrated Quantum Science and Technology (IQST), Universität Stuttgart, Pfaffenwaldring 57, D-70569 Stuttgart, Germany — 2Institute of Physics, University of Münster, Heisenbergstr. 11, D-48149 Münster, Germany
The integration of photonic structures with thermal atomic vapors on a chip provides efficient atom-light coupling on a miniaturized scale well beyond the diffraction limit hence, opening a new regime in the field of cavity quantum electrodynamics. In this talk, we present the results of our study on interactions of thermal Rb atoms with integrated Si3N4 and Si Nano-devices. In the former case, the atoms are probed with a laser at the D2 transition, whereas in latter the atoms are further excited to the 4D states with an additional excitation at telecom wavelength. Our studies on Si structures benefit from a stronger mode confinement due to the large reflective index as well as a larger dipole moment. Moreover, we demonstrate novel measurements on the effects of Si surface potentials on Rb 4D states. Promising results on ring resonators pave the way towards further investigations of high-Q photonic crystal cavities in order to reach the strong coupling regime.
[1] R. Ritter et al., New Journal of Physics 18, 103031 (2016)
[2] R. Ritter et at., Phys. Rev. X 8, 021032 (2018)