- Physical Review Journals
All JournalsPhysics Magazine

Physical Review A

Export citation

Export citation

Choose format for download:

Download Citation

    Entanglement-enhanced quantum error-correcting codes

    Ying Dong (董莹)1,*, Xiuhao Deng (邓修豪)1, Mingming Jiang (姜明明)1, Qing Chen (陈清)1,2, and Sixia Yu (郁司夏)1,2,†

    • 1Department of Modern Physics and Hefei National Laboratory for Physical Sciences at Microscale, University of Science and Technology of China, Hefei 230026, People’s Republic of China
    • 2Department of Physics, National University of Singapore, 2 Science Drive 3, Singapore 117542, Singapore

    • *yingdong@mail.ustc.edu.cn
    • †yusixia@ustc.edu.cn
    PDF

    Phys. Rev. A 79, 042342 – Published 30 April, 2009

    DOI: https://doi.org/10.1103/PhysRevA.79.042342

    Abstract

    Via explicit examples we show that the pre-existing entanglement can really enhance (not only behave as an assistance for) the efficiency of the quantum error-correcting codes (QECCs) in a single block of encoding or decoding as well as help in beating the quantum Hamming bound. A systematic approach to constructing entanglement-assisted (or enhanced) quantum error-correcting codes (EAQECCs) via graph states is also presented, and an infinite family of entanglement-enhanced codes has been constructed. Furthermore we generalize the EAQECCs to the case of not-so-perfectly protected qubit and introduce the quantity infidelity as a figure of merit and show that the EAQECCs also outperform the ordinary QECCs.

    View figure in article

    Authorization Required

    We need you to provide your credentials before accessing this content.

    Other Options

    References (Subscription Required)

    Outline

    Information

    Phys. Rev. A 79, 042342– Published 30 April, 2009
    • Received 20 June 2008

    © 2009 American Physical Society

    Sign In to Your Journals Account

    Filter

    Filter

    Article Lookup

    Enter a citation