5 papers
Higher-order noise statistics restore Heisenberg scaling under collective dephasing
Jiaxin Liu, Xing Heng, Zuoxian Wang +1
Noisy-metrology theory characterizes decoherence by its two-point correlation function, equivalently the single-atom coherence time or noise spectrum. We show this is insufficient…
Search for a parity-violating long-range spin-dependent interaction
Xing Heng, Zitong Xu, Xiaofei Huang +6
High-sensitivity quantum sensors are a promising tool for experimental searches for beyond-Standard-Model interactions. Here, we demonstrate an atomic comagnetometer operating unde…
Dark Matter Search with a Resonantly-Coupled Hybrid Spin System
Kai Wei, Zitong Xu, Yuxuan He +9
Recent advances in tabletop quantum sensor technology have enabled searches for nongravitational interactions of dark matter (DM). Traditional axion DM experiments rely on sharp re…
New Constraints on Axion Mediated Dipole-Dipole Interactions
Zitong Xu, Xing Heng, Guoqing Tian +5
The search for axions sits at the intersection of solving critical problems in fundamental physics, including the strong CP problem in QCD, uncovering the nature of dark matter, an…
Constraining Ultralight Dark Matter through an Accelerated Resonant Search
Zitong Xu, Xiaolin Ma, Kai Wei +9
Experiments aimed at detecting ultralight dark matter typically rely on resonant effects, which are sensitive to the dark matter mass that matches the resonance frequency. In this…