6 citations · 7 across the 7 of their papers we have counts for
Showing 2026Show all
3 papers · 1 filter
quant-ph2026
Rate and depth of two-axis twisting by pair exchange under the self-Kerr constraint
Qing Yu, Ying Li, Cuilu Zhai +2
In this paper, we study two bosonic modes that exchange pairs of quanta, which realize two-axis twisting exactly: within a sector of fixed particle number the exchange operator is…
quant-ph2026
Charging Dicke and Tavis--Cummings quantum batteries with a -symmetric lossy--gain cavity pair
Shiqing Tang, Qing Yu, Ying Li +3
We study how a parity--time-symmetric photonic environment changes the charging of Dicke and Tavis--Cummings quantum batteries. For atoms prepared in the collective ground state th…
quant-ph2026
Optimal initial states for quantum Fisher information in linearized cavity optomechanics
Wangjun Lu, Qing Yu, Ying Li +4
We find the optimal initial states of a linearized cavity-optomechanical system for estimating the single-photon coupling by quantum Fisher information. In the red-detuned (beam-sp…