Mainz 2026 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 71: Cavity QED and QED II
Q 71.7: Vortrag
Freitag, 6. März 2026, 12:30–12:45, P 4
Enhancing atom-photon interaction with integrated nano-photonic structures — •Xiaoyu Cheng1, Benyamin Shnirman1,4, Alexandra Koepf1,4, Hadiseh Alaeian2, Xueyi Wang3, Sunny Yang3, Tilman Pfau1, and Robert Loew1 — 15. Physikalisches Institut, Universitaet Stuttgart — 2School of Electrical and Computer Engineering, Purdue University, Indiana, USA — 3Department of Electrical Engineering, Yale University, Connecticut, USA — 4Institut für Mikroelektronik Stuttgart (IMS-Chips), Stuttgart, Germany
Hybrid devices consisting of thermal atomic vapor and nanophotonic structures are interesting platforms for manipulating the interaction between atoms and photons. For example, we exploit cooperative effects on such hybrid platforms to study the coherent atom-photon coupling in the strong coupling regime. This requires high quality factor micro-ring cavities with small mode volume. We demonstrate that micro-rings with 700K quality factor strongly couple with multiple Rubidium atoms with collective coupling strength of several GHz, which is above the atomic decaying rate and cavity loss, results in the cooperativity C larger than 1. Moreover, we are interested in the thermal and temporal dynamics of Rb atoms experiencing strongly pulsed lasers, known as Light Induced Atomic Desorption (LIAD). With carefully designed nano-photonic structures, one can in principle probe the angular and temporal distribution of LIAD atom clouds.
Keywords: cavity QED; Strong coupling; Vapor cell; nano-photonic structures; micro-ring