Freiburg 2024 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 38: Poster IV
Q 38.2: Poster
Wednesday, March 13, 2024, 17:00–19:00, KG I Foyer
GHZ-bandwidth four-wave mixing in a thermal rubidium vapor using the 6P intermediate state — •Max Mäusezahl1, Felix Moumtsilis1, Moritz Seltenreich1, Jan Reuter2,3, Haim Nakav4, Hadiseh Alaeian5, Harald Kübler1, Matthias Müller2, Charles Stuart Adams6, Robert Löw1, and Tilman Pfau1 — 15. Physikalisches Institut, Universität Stuttgart, Germany — 2Forschungszentrum Jülich GmbH, PGI-8, Germany — 3Universität zu Köln, Germany — 4Weizmann Institute of Science and AMOS, Israel — 5Departments of Electr. & Computer Engin. and Physics & Astronomy, Purdue University, USA — 6Department 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 like our concept based on the Rydberg blockade as demonstrated for room-temperature rubidium atoms in a wedged micro-cell. For our improved 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 the current state, technical challenges, time resolved nanosecond pulsed four-wave mixing, GHz Rabi cycling and photon statistics involving the 40S Rydberg state. Using an updated electrical pulse system and detectors we can increase photon generation and detection efficiency, while exploring the effects of the novel excitation scheme experimentally and numerically. The MHz repetition rate and excitation timescales also pave the way towards fast optimal control methods for high fidelity Rydberg logic gates.
Keywords: single-photon-source; four-wave-mixing; vapour cell; rubidium; Rydberg