Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

arXiv:1408.0399 · The proceedings of the IEEE Conference on Control Applications/The proceedings of the ... IEEE Conference on Control Applications

A direct coupling coherent quantum observer

Ian R. Petersen

Published Oct 1, 2014• 24 citations
arXivHTMLPDF

Abstract

This paper considers the problem of constructing a direct coupling quantum observer for a closed linear quantum system. The proposed observer is shown to be able to estimate some but not all of the plant variables in a time averaged sense.
DOI
10.1109/cca.2014.6981590

Related papers

A Possible Implementation of a Direct Coupling Coherent Quantum Observer

Ian R. Petersen, Elanor H. Huntington

This paper considers the problem of implementing a previously proposed direct coupling quantum observer for a closed linear quantum system. This observer is shown to be able to estimate some but not all of the plant variables in a time averaged sense. The paper proposes a possible experimental implementation of the observer plant system using a non-degenerate parametric amplifier.

arXiv:1509.01898•Australian Control Conference•Sep 7, 2015•10 citations

A direct coupling coherent quantum observer for a single qubit finite level quantum system

Ian R. Petersen

This paper considers the problem of constructing a direct coupling quantum observer for a single qubit finite level quantum system plant. The proposed observer is a single mode linear quantum system which is shown to be able to estimate one of the plant variables in a time averaged sense.

arXiv:1409.2594•Australian Control Conference•Nov 1, 2014•8 citations

Time averaged consensus in a direct coupled distributed coherent quantum observer

Ian R. Petersen

This paper considers the problem of constructing a distributed direct coupling quantum observer for a closed linear quantum system. The proposed distributed observer consists of a network of quantum harmonic oscillators and it is shown that the distributed observer converges to a consensus in a time averaged sense in which each component of the observer estimates the specified output of the quantum plant.

arXiv:1503.01457•Proceedings of the ... American Control Conference/Proceedings of the American Control Conference•Jul 1, 2015•9 citations

Implementation of a direct coupling coherent quantum observer including observer measurements

Ian R. Petersen, Elanor H. Huntington

This paper considers the problem of constructing a direct coupling quantum observer for a quantum harmonic oscillator system. The proposed observer is shown to be able to estimate one but not both of the plant variables and produces a measureable output using homodyne detection.

arXiv:1603.01436•Proceedings of the ... American Control Conference/Proceedings of the American Control Conference•Jul 1, 2016•11 citations

A reduced order direct coupling coherent quantum observer for a complex quantum plant

Ian R. Petersen, Elanor H. Huntington

This paper extends previous results on constructing a direct coupling quantum observer for a quantum harmonic oscillator system. In this case, we consider a complex linear quantum system plant consisting of a network of quantum harmonic oscillators. Conditions are given for which there exists a direct coupling observer which estimates a collection of variables in the quantum plant. It is shown that the order of the observer can be the same as the number of variables to be estimated when this number is even and thus this is a reduced order observer.

arXiv:1603.04949•European Control Conference (ECC)•Jun 1, 2016•5 citations

A direct coupling coherent quantum observer for an oscillatory quantum plant

Ian R. Petersen

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 the quantum plant output without disturbing this plant signal. By choosing a sufficiently small averaging time and a sufficiently large observer gain, the observer tracking error can be made arbitrarily small.

arXiv:1706.06248•IEEE Conference on Control Technology and Applications (CCTA)•Aug 1, 2017•3 citations
This paper extends previous results on constructing a direct coupling quantum observer for a quantum harmonic oscillator system. In this case, we consider a complex linear quantum system plant consisting of a network of quantum harmonic oscillators. Conditions are given for which there exists a direct coupling observer which estimates a collection of variables in the quantum plant. It is shown that the order of the observer can be the same as the number of variables to be estimated when this number is even and thus this is a reduced order observer.