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

doi:10.1103/PhysRevA.98.062714

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

Research output: Contribution to journal › Article › Academic › peer-review

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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 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 language	English
Article number	062714
Number of pages	6
Journal	Physical Review A
Volume	98
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevA.98.062714
Publication status	Published - 27 Dec 2018

Funding

We thank Shannon Whitlock and Tilman Pfau for fruitful discussions and suggestions. R.J.C.S. and N.J.v.D. acknowledge stimulating discussions within the QuSoft consortium. This work is part of the research programme of the Foundation for Fundamental Research on Matter (FOM), which is part of the Dutch Organisation for Scientific Research (NWO). We also acknowledge EU funding through the RySQ programme. The superatom calculations were carried out on the Lisa Compute Cluster, which is hosted at SURFSara [48] .

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10.1103/PhysRevA.98.062714

arXiv 1810.04532v1Final author version , 446 KB
published versionFinal published version, 554 KB

https://arxiv.org/abs/1810.04532v1

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title = "From coherent collective excitation to Rydberg blockade on an atom chip",

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 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.",

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AU - van Linden van den Heuvell, H.B.

AU - van Druten, N.J.

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AB - 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.

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From coherent collective excitation to Rydberg blockade on an atom chip

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