2018/10/31 by Julius de Hond, Rick van Bijnen, S. J. J. M. F. Kokkelmans +3 · 13 citations
Mathematics · Physics and Astronomy · #Atom (system on chip) #Atomic and Subatomic Physics Research #Atomic physics #Coherence (philosophical gambling strategy) #Cold Atom Physics and Bose-Einstein Condensates #Excitation #Hamiltonian (control theory) #Ion #Ionization #Mathematics #Physics #Quantum mechanics #Quantum, superfluid, helium dynamics #Rydberg atom #Rydberg formula #physics.atom-ph
paper · pdf · doi:10.1103/physreva.98.062714
published in Physical Review A 98(6) (American Physical Society) · 6 pages, 3 figures
openalex publication_date 2018/12/27 · arxiv created 2019/01/02 · arxiv updated 2019/01/09 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Using time-resolved measurements, we demonstrate coherent collective Rydberg excitation crossing over into Rydberg blockade in a dense and ultracold gas trapped at a distance of 100 \ensuremathμm from a room-temperature atom chip. We perform Ramsey-type measurements to characterize the coherence. The experimental data are in good agreement with numerical results from a master equation using a mean-field approximation and with results from a super-atom-based Hamiltonian. This represents significant progress in exploring a strongly interacting driven Rydberg gas on an atom chip.