6 papers
On Realization of Back-Action-Evading Measurements and Quantum Non-Demolition Variables via Linear Systems Engineering
Zhiyuan Dong, Weichao Liang, Guofeng Zhang
We establish a framework for realizing back-action-evading (BAE) measurements and quantum non-demolition (QND) variables in linear quantum systems. The key condition, a purely imag…
Back-Action-Evading Measurements and Quantum Non-Demolition Variables via Linear Systems Engineering
Zhiyuan Dong, Weichao Liang, Guofeng Zhang
We establish a framework for realizing back-action-evading (BAE) measurements and quantum non-demolition (QND) variables in linear quantum systems. The key condition, a purely imag…
Stabilization of Time-Varying Perturbed Quantum Systems via Reduced Filters
Weichao Liang, Daoyi Dong
In practical applications, quantum systems are inevitably subject to significant uncertainties, including unknown initial states, imprecise physical parameters, and unmodeled envir…
Parameter Estimation for Jump-Diffusion Stochastic Master Equations
Weichao Liang, Shuixin Xiao, Daoyi Dong +1
This paper investigates parameter estimation for open quantum systems under continuous observation, whose conditional dynamics are governed by jump-diffusion stochastic master equa…
Stabilization of jump-diffusion stochastic differential equations by hysteresis switching
Weichao Liang, Gaoyue Guo
We address the stabilization of both classical and quantum systems modeled by jump-diffusion stochastic differential equations using a novel hysteresis switching strategy. Unlike t…
Simultaneous estimations of quantum state and detector through multiple quantum processes
Shuixin Xiao, Weichao Liang, Yuanlong Wang +3
The estimation of all the parameters in an unknown quantum state or measurement device, commonly known as quantum state tomography (QST) and quantum detector tomography (QDT), is c…