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quant-ph2022★ 27 cited
Direct measurement of quantum Fisher information
Xingyu Zhang, Xiao-Ming Lu, Jing Liu +2
In the adiabatic perturbation theory, Berry curvature is related to the generalized force, and the quantum metric tensor is linked with energy fluctuation. While the former is test…
quant-ph2022★ 5 cited
Dynamic quantum-enhanced sensing without entanglement in central spin systems
Wenkui Ding, Yanxia Liu, Zhenyu Zheng +1
We propose a dynamic quantum sensing scheme by using a quantum many-spin system composed of a central spin interacting with many surrounding spins. Starting from a generalized Isin…