Searching for an exotic spin-dependent interaction with a single electron-spin quantum sensor

Xing Rong, Mengqi Wang, Jianpei Geng, Xi Qin, Maosen Guo, Man Jiao, Yijin Xie, Pengfei Wang (), Pu Huang, Fazhan Shi, Yi-Fu Cai, Chongwen Zou and Jiangfeng Du ()
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Xing Rong: University of Science and Technology of China (USTC)
Mengqi Wang: University of Science and Technology of China (USTC)
Jianpei Geng: University of Science and Technology of China (USTC)
Xi Qin: University of Science and Technology of China (USTC)
Maosen Guo: University of Science and Technology of China (USTC)
Man Jiao: University of Science and Technology of China (USTC)
Yijin Xie: University of Science and Technology of China (USTC)
Pengfei Wang: University of Science and Technology of China (USTC)
Pu Huang: University of Science and Technology of China (USTC)
Fazhan Shi: University of Science and Technology of China (USTC)
Yi-Fu Cai: USTC
Chongwen Zou: USTC
Jiangfeng Du: University of Science and Technology of China (USTC)

Nature Communications, 2018, vol. 9, issue 1, 1-7

Abstract: Abstract Searching for new particles beyond the standard model is crucial for understanding several fundamental conundrums in physics and astrophysics. Several hypothetical particles can mediate exotic spin-dependent interactions between ordinary fermions, which enable laboratory searches via the detection of the interactions. Most laboratory searches utilize a macroscopic source and detector, thus allowing the detection of interactions with submillimeter force range and above. It remains a challenge to detect the interactions at shorter force ranges. Here we propose and demonstrate that a near-surface nitrogen-vacancy center in diamond can be utilized as a quantum sensor to detect the monopole–dipole interaction between an electron spin and nucleons. Our result sets a constraint for the electron–nucleon coupling, $$g_{{\mathrm{s}}}^{\mathrm{N}}g_{\mathrm{p}}^{\mathrm{e}}$$ g s N g p e , with the force range 0.1–23 μm. The obtained upper bound of the coupling at 20 μm is $$g_{{\mathrm{s}}}^{\mathrm{N}}g_{\mathrm{p}}^{\mathrm{e}}$$ g s N g p e

Date: 2018
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DOI: 10.1038/s41467-018-03152-9

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