14 citations · 45 across the 8 of their papers we have counts for
8 papers · 1 filter
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…
Quantum metrology enhanced by the spin interaction in a generalized Tavis-Cummings model
Yuguo Su, Wangjun Lu, Hai-Long Shi
Quantum metrology is recognized for its capability to offer high-precision estimation by utilizing quantum resources, such as quantum entanglement. Here, we propose a generalized T…
Lee-Yang zeros and quantum Fisher information matrix in a nonlinear system
Hong Tao, Yuguo Su, Xingyu Zhang +2
The distribution of Lee-Yang zeros not only matters in thermodynamics and quantum mechanics, but also in mathematics. Hereby we propose a nonlinear quantum toy model and discuss th…
Single-photon-triggered spin squeezing with decoherence reduction in optomechanics via phase matching
Zhucheng Zhang, Lei Shao, Wangjun Lu +4
Quantum spin squeezing is an important resource for quantum information processing, but its squeezing degree is not easy to preserve in an open system with decoherence. Here, we pr…
Parametrized protocol achieving the Heisenberg limit in the optical domain via dispersive atom-light interactions
Yuguo Su, Xiaoguang Wang
The strong and collective atom-light interactions in cavity-QED systems perform manifold benefits in quantum-enhanced measurements. Here, we study the time-reversal protocol that h…
Spin squeezing and concurrence under Lee-Yang dephasing channels
Yuguo Su, Hongbin Liang, Xiaoguang Wang
The Lee-Yang zeros are one-to-one mapping to zeros in the coherence of a probe spin coupled to a many-body system. Here, we study the spin squeezing under two different types of Le…
Majorana stellar representation for mixed-spin systems
Yuguo Su, Fei Yao, Yanming Che +2
By describing the evolution of a quantum state with the trajectories of the Majorana stars on a Bloch sphere, Majorana's stellar representation provides an intuitive geometric pers…
Enhancing the sensitivity of rotation in a multi-atom Sagnac interferometer
Fei Yao, Yanming Che, Yuguo Su +3
We investigate quantum sensing of rotation with a multi-atom Sagnac interferometer and present multi-partite entangled states to enhance the sensitivity of rotation frequency. For…