SAMOP 2023 – scientific programme
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MO: Fachverband Molekülphysik
MO 11: Quantum Technologies (joint session Q/MO/QI)
MO 11.4: Talk
Wednesday, March 8, 2023, 15:30–15:45, E214
A single-photon source based on hot Rydberg atoms — •Jan Reuter1,2, Max Mäusezahl3, Felix Moumtsilis3, Tilman Pfau3, Tommaso Calarco1,2, Robert Löw3, and Matthias Müller1 — 1Forschungszentrum Jülich GmbH — 2Universität zu Köln — 3Universität Stuttgart
The leading effects of a single-photon source based on Rydberg atoms are the strong van-der-Waals interaction between the atoms as well as the collective decay of the atom ensemble. Our setup is a vapor cell filled with Rubidium atoms which we excite via three different laser pulses. The decay of this excitation will then lead to the emission of a single photon. To ensure robustness, we investigated the behavior of moving Rydberg atoms and optimized the laser pulse sequence. For that, we simulated the transitions of Rubidium atoms from the ground state over the Rydberg state up to the singly-excited collective states. We can show that the collective decay of the single excitations leads to a fast and directed photon emission, while double excitations show no or only weak collective properties.