Erlangen 2018 – scientific programme

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A: Fachverband Atomphysik

A 42: Poster Session IIIb

A 42.19: Poster

Thursday, March 8, 2018, 16:15–18:15, Zelt Ost

Towards a hybrid quantum system of Rydberg atoms and a coplanar waveguide cavity — •Conny Glaser, Helge Hattermann, Li Yuan Ley, Daniel Bothner, Benedikt Ferdinand, Lörinc Sárkány, Reinhold Kleiner, Dieter Kölle und József Fórtagh — CQ Center for Collective Quantum Phenomena and their Applications, Physikalisches Institut, Eberhard Karls Universität Tübingen, Auf der Morgenstelle 14, D-72076 Tübingen, Germany

Coupling Rydberg atoms to coplanar superconducting resonators has been proposed to enable efficient state transfer between solid state systems and ultracold atoms. This coupling could be used for the generation of an atomic quantum memory or the implementation of new quantum gates [1,2].

After the successful demonstration of magnetic coupling between ultracold ground state atoms and a coplanar waveguide resonator, we progress towards coupling Rydberg atoms to the electric field of the cavity. Due to the large dipole moment of Rydberg atoms, the coupling strength to the cavity is expected to be much larger than in the case of ground state atoms. At the same time, Rydberg states are strongly affected by any detrimental fields, such as the electric field of adsorbates on the chipsurface, which lead to spatially inhomogeneous energy shifts. We report on the characterization of these fields, state selective detection of Rydberg atoms and on the progress towards coupling.

[1] L. Sárkány et al., Phys. Rev. A 92, 030303 (2015).

[2] J. D. Pritchard et al., Phys. Rev. A 89, 010301 (2014).