64 citations · 77 across the 4 of their papers we have counts for
4 papers
Approaching the double-Heisenberg scaling sensitivity in the Tavis-Cummings model
Yuguo Su, Tiantian Ying, Bo Liu +1
The pursuit of quantum-enhanced parameter estimations without the need for nonclassical initial states has long been driven by the goal of achieving experimentally accessible quant…
Advantage of quantum coherence in postselected metrology
Shao-Jie Xiong, Peng-Fei Wei, Huang-Qiu-Chen Wang +5
In conventional measurement, to reach the greatest accuracy of parameter estimation, all samples must be measured since each independent sample contains the same quantum Fisher inf…
Entanglement in spin-1/2 dimerized Heisenberg systems
Zhe Sun, XiaoGuang Wang, AnZi Hu +1
We study entanglement in dimerized Heisenberg systems. In particular, we give exact results of ground-state pairwise entanglement for the four-qubit model by identifying a Z_2 symm…
Pairwise entanglement in symmetric multi-qubit systems
Xiaoguang Wang, Klaus Molmer
The concurrence, a quantitative measure of the entanglement between a pair of particles, is determined for the case where the pair is extracted from a symmetric state of N two-leve…