9 papers · 1 filter
Criticality-enhanced global frequency sensing with a monitored Kerr parametric oscillator via extended Kalman filter
Cheng Zhang, Mauro Cirio, Xin-Qi Li +1
We analyze a global sensing scenario in which the frequency of a monitored Kerr parametric oscillator is estimated assuming limited prior information. The frequency is estimated in…
Purified pseudomode model for nonlinear system-bath interactions
Cheng Zhang, Neill Lambert, Xin-Qi Li +2
The theory of purified pseudomodes [arXiv:2412.04264 (2024)] was recently developed to provide a numerical tool for the analysis of the properties of a quantum system and the envir…
Enhancing information retrieval in quantum-optical critical systems via quantum measurement backaction
Cheng Zhang, Mauro Cirio, Xin-Qi Li +1
Continuous monitoring of open quantum-optical systems offers a promising route towards quantum-enhanced estimation precision. In such continuous-measurement-based sensing protocols…
HierarchicalEOM.jl: An efficient Julia framework for hierarchical equations of motion in open quantum systems
Yi-Te Huang, Po-Chen Kuo, Neill Lambert +5
The hierarchical equations of motion (HEOM) approach can describe the reduced dynamics of a system simultaneously coupled to multiple bosonic and fermionic environments. The comple…
Super-bath Quantum Eigensolver
Tianren Wang, Zongkang Zhang, Bing-Nan Lu +2
The simulation of the dynamics of a system coupled to a low-temperature environment is a promising application of quantum computers to determine ground-state properties of physical…
Input-Output Hierarchical Equations Of Motion
Mauro Cirio, Pengfei Liang, Neill Lambert
We derive an extended version of the hierarchical equations of motion (HEOM) to compute output physical properties of a bosonic environment, which is allowed to be initially prepar…