Enhancing the coherence time of a neutral atom by an optical quartic trap
Year: 2025
Type: preprint
Abstract: The coherence time of an optically trapped neutral atom is a crucial parameter for quantum technologies. We found that optical dipole traps with higher-order spatial forms inherently offer lower decoherence rates compared to those with lower-order spatial forms. We formulated the decoherence rate caused by the variance of the differential energy shift and photon jumping rate. Then, we constructed blue-detuned harmonic and quartic optical dipole traps, and experimentally investigated the coherence time of a trapped single cesium atom. The experimental results qualitatively verified our theory. Our approach provides a novel method to enhance the coherence time of optically trapped neutral atoms.
Source: arXiv (Cornell University)
Authors: Chang, Haobo, Tian, Zhuangzhuang, Lv, Xin, Yang, Mengna, Wang, Zhihui, Guo, Qi, Yang, Pengfei, Zhang, Pengfei, Li, Gang, Zhang, Tiancai
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W6967041862
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