| 1 | New constraints on exotic spin-dependent interactions with an ensemble-NV-diamond magnetometer显示文摘Laboratory search of exotic interactions is crucial for exploring physics beyond the standard model.We report new experimental constraints on two exotic spin-dependent interactions at the micrometer scale based on ensembles of nitrogen-vacancy(NV)centers in diamond.A thin layer of NV ele ctronic spin ensembles is synthesized as the solid-state spin quantum sensor,and a lead sphere is taken as the interacting nucleon source.Our result establishes new bounds for two types of exotic spin interactions at the micrometer scale.For an exotic parity-odd spin-and velocity-dependent interaction,improved bounds are set within the force range from 5 to 500μm.The upper limit of the corresponding coupling constant g_A~eg_V~N at 330μm is more than 1000-fold more stringent than the previous constraint.For the P,T-violating scalar-pseudoscalar nucleon-electron interaction,improved constraints are established within the force range from 6 to 45μm.The limit of the corresponding coupling constant g_S~Ng_P~e is improved by more than one order of magnitude at 30μm.This work demonstrates that a solid-state NV ensemble can be a powerful platform for probing exotic spin-dependent interactions. | Hang Liang Man Jiao Yue Huang Pei Yu Xiangyu Ye Ya Wang Yijin Xie Yi-Fu Cai Xing Rong Jiangfeng Du | 2023 | National Science Review2023，10，7： | 0 |
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