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Title: D1 magic wavelength tweezers for scaling atom arrays
Authors: Aliyu, Mohammad Mujahid
Zhao, Luheng
Quek, Xiu Quan 
Yellapragada, Krishna Chaitanya
Loh, Huanqian 
Issue Date: 21-Oct-2021
Publisher: American Physical Society
Citation: Aliyu, Mohammad Mujahid, Zhao, Luheng, Quek, Xiu Quan, Yellapragada, Krishna Chaitanya, Loh, Huanqian (2021-10-21). D1 magic wavelength tweezers for scaling atom arrays. Physical Review Research 3 (4) : A67. ScholarBank@NUS Repository.
Rights: Attribution 4.0 International
Abstract: Efficient trapping and detection of single atoms in optical tweezers are important for realizing atom arrays, a promising platform for quantum simulation and quantum information processing. However, the scaling up of atom arrays can be impeded by detrimental light shifts induced by the tweezer trap, making it challenging to cool and image single atoms. Here, we report an order-of-magnitude increase in the scalability of Na23 atom arrays by using D1 magic wavelength tweezers to reduce the required tweezer power per trap. D1 magic wavelengths have been previously predicted to exist for all the alkali atoms but are not yet observed to date. We first experimentally confirm a D1 magic wavelength that is predicted to lie at 615.87 nm, which we then use to trap and image single atoms without having to modulate the trapping and imaging light intensities. We further demonstrate that the mean loading efficiency remains as high as 80.0(6)% for a single trap and 74.2(7)% for a one-dimensional array of eight atoms. The methods reported here are applicable to all the alkalis, including those that are attractive candidates for dipolar molecule assembly, Rydberg dressing, or are fermionic in nature. © 2021 authors. Published by the American Physical Society.
Source Title: Physical Review Research
ISSN: 2643-1564
DOI: 10.1103/physrevresearch.3.043059
Rights: Attribution 4.0 International
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