Distinct antiblockade features of strongly interacting Rydberg atoms under a two-color weak excitation scheme

Suying Bai; Xuedong Tian; Xiaoxuan Han; Yuechun Jiao; Jinhui Wu; Jianming Zhao; Suotang Jia

doi:10.1088/1367-2630/ab6575

New Journal of Physics (Jan 2020)

Distinct antiblockade features of strongly interacting Rydberg atoms under a two-color weak excitation scheme

Suying Bai,
Xuedong Tian,
Xiaoxuan Han,
Yuechun Jiao,
Jinhui Wu,
Jianming Zhao,
Suotang Jia

Affiliations

Suying Bai: State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Shanxi University , Taiyuan 030006, People’s Republic of China; Collaborative Innovation Center of Extreme Optics, Shanxi University , Taiyuan 030006, People’s Republic of China
Xuedong Tian: College of Physics Science and Technology, Guangxi Normal University , Guilin 541004, People’s Republic of China
Xiaoxuan Han: State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Shanxi University , Taiyuan 030006, People’s Republic of China; Collaborative Innovation Center of Extreme Optics, Shanxi University , Taiyuan 030006, People’s Republic of China
Yuechun Jiao: State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Shanxi University , Taiyuan 030006, People’s Republic of China; Collaborative Innovation Center of Extreme Optics, Shanxi University , Taiyuan 030006, People’s Republic of China
Jinhui Wu: School of Physics, Northeast Normal University , Changchun 130024, People’s Republic of China
Jianming Zhao: ORCiD; State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Shanxi University , Taiyuan 030006, People’s Republic of China; Collaborative Innovation Center of Extreme Optics, Shanxi University , Taiyuan 030006, People’s Republic of China
Suotang Jia: State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Shanxi University , Taiyuan 030006, People’s Republic of China; Collaborative Innovation Center of Extreme Optics, Shanxi University , Taiyuan 030006, People’s Republic of China

DOI: https://doi.org/10.1088/1367-2630/ab6575
Journal volume & issue: Vol. 22, no. 1
p. 013004

Abstract

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We present distinct antiblockade features of strongly interacting 64 D _5/2 Rydberg atoms employing a two-color excitation scheme. The first color (pulse A) is set to resonantly excite a few seed Rydberg atoms, each of which establishes a blockade region due to the long-range multipole interactions. The second color (pulse B) is blue detuned so that the multipole-interaction-induced shifts of certain atoms are well compensated to result in the antiblockade effect. We find in particular that a few seed atoms can lead to a remarkable difference of the Rydberg excitation in the presence of pulse B for a wide range of blue detuning. Relevant dynamics of this antiblockade excitation is also investigated by varying the pulse-B duration for a fixed blue detuning, further confirming the facilitation process of Rydberg excitation accompanied by a saturation effect. These experimental results can be well recovered by theoretical simulations based on a multilevel two-body model.

Published in New Journal of Physics

ISSN: 1367-2630 (Online)
Publisher: IOP Publishing
Country of publisher: United Kingdom
LCC subjects: Science: Physics
Website: https://iopscience.iop.org/journal/1367-2630

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