SAMOP 2023 – scientific programme
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A: Fachverband Atomphysik
A 1: Quantum Technologies (joint session Q/A/QI)
A 1.5: Talk
Monday, March 6, 2023, 12:00–12:15, A320
GHz bandwidth four-wave mixing in a thermal rubidium vapor — •Max Mäusezahl1, Felix Moumtsilis1, Moritz Seltenreich1, Jan Reuter2,3, Hadiseh Alaeian4, Harald Kübler1, Matthias Müller2, Charles Stuart Adams5, Robert Löw1, and Tilman Pfau1 — 15. Physikalisches Institut, Universität Stuttgart, Germany — 2Forschungszentrum Jülich GmbH, PGI-8, Germany — 3Universität zu Köln, Germany — 4Departments of Electrical & Computer Engineering and Physics & Astronomy, Purdue University, USA — 5Department of Physics, Joint Quantum Centre (JQC), Durham University, UK
Fast coherent control of Rydberg excitations is essential for quantum logic gates and on-demand single-photon sources based on the Rydberg blockade as demonstrated for room-temperature rubidium atoms in a micro-cell. During our ongoing development of the next generation of this single-photon source we employ state-of-the-art 1010 nm pulsed fiber amplifiers to drive a Rydberg excitation via the 6P intermediate state.
Here we report on time resolved observations of nanosecond pulsed four-wave mixing and GHz Rabi cycling involving the 32S Rydberg state. Our results show oscillating dynamics of the mixed photons on the final transition of the FWM cycle. The MHz repetition rates and significantly higher photon yields allow us to study and optimize the antibuching through elaborate pulse shaping motivated by numerical simulations. Such excitation timescales also pave the way towards fast optimal control methods for high fidelity Rydberg logic gates.