Feedback preparation of Bell states for two-qubit systems with time delay

Yanan Liu, Daoyi Dong, Ian R. Petersen, Sen Kuang, Hidehiro Yonezawa

    Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

    5 Citations (Scopus)

    Abstract

    Bell states are the maximally entangled states in two-qubit quantum systems, and play a significant role in quantum computation and quantum communication. Feedback control of stochastic quantum systems usually suffers from time-delay problems caused by the computation time for filter states and the control input. This paper addresses the preparation of Bell states in two-qubit systems with a constant delay time. A Lyapunov method is used to design a switching control law and a constant is introduced to compensate for the computation time of the estimated states and the feedback control input, thereby stabilizing the target Bell state globally. Numerical results show the effectiveness of the proposed control law.

    Original languageEnglish
    Title of host publication2019 American Control Conference, ACC 2019
    PublisherInstitute of Electrical and Electronics Engineers Inc.
    Pages5008-5013
    Number of pages6
    ISBN (Electronic)9781538679265
    DOIs
    Publication statusPublished - Jul 2019
    Event2019 American Control Conference, ACC 2019 - Philadelphia, United States
    Duration: 10 Jul 201912 Jul 2019

    Publication series

    NameProceedings of the American Control Conference
    Volume2019-July
    ISSN (Print)0743-1619

    Conference

    Conference2019 American Control Conference, ACC 2019
    Country/TerritoryUnited States
    CityPhiladelphia
    Period10/07/1912/07/19

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