Ian R. Petersen

Time averaged consensus in a direct coupled coherent quantum observer network for a single qubit finite level quantum system

2015

This paper considers the problem of constructing a direct coupled quantum observer network for a single qubit quantum system. The proposed observer consists of a network of quantum harmonic oscillators and it is shown that …

Coherent Robust H-Infinity Control of Uncertain Linear Quantum Stochastic Systems

2015 · arXiv (Cornell University)

This paper considers a class of uncertain linear quantum systems subject to uncertain perturbations in the system Hamiltonian. We present a method to design a coherent robust H-infinity controller so that the closed loop system …

A direct coupling coherent quantum observer for an oscillatory quantum plant

2017 · 2017 IEEE Conference on Control Technology and Applications (CCTA)

A direct coupling coherent observer is constructed for a linear quantum plant which has oscillatory solutions. It is shown that a finite time moving average of the quantum observer output can provide an estimate of …

H∞ Filtering For An Optical Cavity System Disturbed By Lorentzian Quantum Noise

2017 · IFAC-PapersOnLine

In this paper, we present a H ∞ filter for estimating dynamics of a Lorentzian-noise-disturbed non-Markovian cavity system with disturbances. The non-Markovian cavity system can be represented by an augmented system, where the Lorentzian quantum …

Lyapunov Control of Quantum Systems Based on Energy-Level Connectivity Graphs

2018 · IEEE Transactions on Control Systems Technology

This paper proposes a new multilayer Lyapunov control scheme based on energy-level connectivity graphs of quantum systems, which enables a high-probability population transfer to any eigenstate in high-dimensional quantum systems. We provide a graph connectivity …

Optimal Quantum Realization of a Classical Linear System

2020 · IFAC-PapersOnLine

Additional noise in a quantum system can be detrimental to the performance of a quantum coherent feedback control system. This paper proposes a Linear Matrix Inequality (LMI) approach to construct an optimal quantum realization of …

On how neural networks enhance quantum state tomography with limited resources

2021 · 2021 60th IEEE Conference on Decision and Control (CDC)

Quantum state tomography is defined as a process of reconstructing the density matrix of a quantum state and is an important task for various emerging quantum technologies. In this work, we propose a general quantum …

Optimization of Partially Isolated Quantum Harmonic Oscillator Memory Systems by Mean Square Decoherence Time Criteria

2025

This paper is concerned with open quantum harmonic oscillators with position-momentum system variables, whose internal dynamics and interaction with the environment are governed by linear quantum stochastic differential equations. A recently proposed approach to such …