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    Optimizing for an arbitrary perfect entangler. II. Application


    Goerz, Michael H. and Gualdi, Giulia and Reich, Daniel M. and Koch, Christiane P. and Motzoi, Felix and Whaley, K. Birgitta and Vala, Jiri and Muller, Matthias M. and Montangero, Simone and Calarco, Tommaso (2015) Optimizing for an arbitrary perfect entangler. II. Application. Physical Review A, 91 (062307). pp. 1-11. ISSN 1050-2947

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    Abstract

    The difficulty of an optimization task in quantum information science depends on the proper mathematical expression of the physical target. Here we demonstrate the power of optimization functionals targeting an arbitrary perfect two-qubit entangler, which allow generation of a maximally entangled state from some initial product state. We show for two quantum information platforms of current interest, i.e., nitrogen vacancy centers in diamond and superconducting Josephson junctions, that an arbitrary perfect entangler can be reached faster and with higher fidelity than both specific two-qubit gates and local equivalence classes of two-qubit gates. Our results are obtained using two independent optimization approaches, underscoring the critical role of the optimization target.

    Item Type: Article
    Additional Information: The definitive version of this article is available at Optimizing for an arbitrary perfect entangler. II. Application Michael H. Goerz, Giulia Gualdi, Daniel M. Reich, Christiane P. Koch, Felix Motzoi, K. Birgitta Whaley, Jiří Vala, Matthias M. Müller, Simone Montangero, and Tommaso Calarco Phys. Rev. A 91, 062307 – Published 8 June 2015 DOI: http://dx.doi.org/10.1103/PhysRevA.91.062307
    Keywords: Optimization; arbitrary perfect entangler; nitrogen vacancy centers in diamond; superconducting Josephson junctions;
    Academic Unit: Faculty of Science and Engineering > Mathematical Physics
    Item ID: 6310
    Identification Number: https://doi.org/10.1103/PhysRevA.91.062307
    Depositing User: Dr. Jiri Vala
    Date Deposited: 20 Aug 2015 15:51
    Journal or Publication Title: Physical Review A
    Publisher: American Physical Society
    Refereed: Yes
    Funders: Science Foundation Ireland (SFI)
    URI:

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