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quant-ph2026
Enhancing Quantum Metrology with High-order Fisher Information and Experiments
Xin-Zhu Liu, Jun-Li Jiang, Yan-Han Yang +4
Fisher information plays a central role in statistics and quantum metrology, providing the basis for the celebrated Cramér-Rao bound. In this work, we introduce a new information m…
quant-ph2026
Thermal vapor quantum battery based on collective atomic spins
Jinyi Li, Juncheng Zheng, Xue Yang +7
Quantum batteries harness non-classical resources, such as quantum coherence and entanglement, to surpass the performance limits of classical energy-storage devices. Here we realiz…