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Q: Fachverband Quantenoptik und Photonik
Q 55: Poster VI
Q 55.5: Poster
Donnerstag, 14. März 2024, 17:00–19:00, Tent B
Purcell modified Doppler cooling of quantum emitters inside optical cavities — •Julian Lyne1,2, Nico Bassler1,2, Seong eun Park3, Guido Pupillo4, and Claudiu Genes2,1 — 1Department of Physics, Friedrich-Alexander-Universität Erlangen-Nürnberg, Staudtstraße 7, D-91058 Erlangen, Germany — 2Max Planck Institute for the Science of Light, D-91058 Erlangen, Germany — 3Daegu Gyeongbuk Institute of Science and Technology,333 Techno jungang-daero, Hyeonpung-eup, Dalseong-gun, Daegu, South Korea — 4Centre Européen de Sciences Quantiques (CESQ), Institut de Science et d' Ingénierie Supramoléculaires (ISIS) (UMR7006) and Atomic Quantum Computing as a Service (aQCess), University of Strasbourg and CNRS, Strasbourg 67000, France
Standard cavity cooling of atoms or dielectric particles is based on the action of dispersive optical forces in high-finesse cavities. We investigate here a complementary regime characterized by large cavity losses, resembling the standard Doppler cooling technique. For a single two-level emitter a modification of the cooling rate is obtained from the Purcell enhancement of spontaneous emission in the large cooperativity limit. This mechanism is aimed at cooling of quantum emitters without closed transitions, which is the case for molecular systems, where the Purcell effect can mitigate the loss of population from the cooling cycle. We extend our analytical formulation to the many particle case governed by weak individual coupling but exhibiting collective strong Purcell enhancement to a cavity mode.
Keywords: Doppler cooling; Purcell effect; molecules; cavity QED