From coherent collective excitation to Rydberg blockade on an atom chip

Julius de Hond, Rick van Bijnen, S.J.J.M.F. Kokkelmans, R.J.C. Spreeuw, H.B. van Linden van den Heuvell, N.J. van Druten

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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 μm 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.

Original languageEnglish
Article number062714
Number of pages6
JournalPhysical Review A
Issue number6
Publication statusPublished - 27 Dec 2018


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