Hannover 2020 – wissenschaftliches Programm
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A: Fachverband Atomphysik
A 22: Poster Session - Atomic Physics III
A 22.8: Poster
Mittwoch, 11. März 2020, 16:00–18:00, Empore Lichthof
Construction of a Rydberg atom register — •Suthep Pomjaksilp, Sven Schmidt, Thomas Niederprüm, and Herwig Ott — Department of Physics and research center OPTIMAS, Technische Universität Kaiserslautern, Germany
Over the last years, arrays of assembled single atoms emerged as a ground-breaking platform in quantum physics. These setups do not only feature single-atom control, additionally exciting addressable atoms to Rydberg states introduces further possibilities to investigate interaction in arbitrary geometric configurations.
We plan to realize a two-dimensional array of up to 100 single 87Rb atoms trapped with holographically created optical tweezers at 1064 nm. Cold atoms are provided by a magneto optical trap via a single laser serving as both, cooler and repumper. While stabilized at the repumper transition, an electro-optical modulator generates the necessary cooling light. This enables us to further cool and compress the atom cloud with a grey molasses scheme by sweeping the laser. In addition, exploiting light-induced atomic desorption prolongs the lifetime of the trapped atoms by allowing us to reduce the background pressure.
Finally, cooling of 85Rb can be implemented all electronically by driving the modulator with additional frequencies. Combined with the single atom control and excitation to Rydberg states, a highly versatile, yet compact, experimental setup is obtained.