文章基本信息

标题：A Direct Coupling Coherent Quantum Observer for a Qubit, including Observer Measurements
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作者：Ian R. Petersen ; Elanor H. Huntington
期刊名称：IFAC PapersOnLine
印刷版ISSN：2405-8963
出版年度：2017
卷号：50
期号：1
页码：4968-4972
DOI：10.1016/j.ifacol.2017.08.761
语种：English
出版社：Elsevier
摘要：AbstractThis paper proposes a direct coupling coherent quantum observer for a quantum plant which consists of a two level quantum system. The quantum observer, which is a quantum harmonic oscillator, includes homodyne detection measurements. It is shown that the observer can be designed so that it does not affect the quantum variable of interest in the quantum plant and that measured output converges in a given sense to the plant variable of interest. Also, the plant variable of interest-observer system can be described by a set of linear quantum stochastic differential equations. A minimum variance unbiased estimator form of the Kalman filter is derived for linear quantum systems and applied to the direct coupled coherent quantum observer.