From coherent collective excitation to Rydberg blockade on an atom chip
arXiv:1810.04532 · doi:10.1103/PhysRevA.98.062714
Abstract
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 m 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. These results represent significant progress in exploring a strongly interacting driven Rydberg gas on an atom chip.
arXiv comment6 pages, 3 figures
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