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Logical network implementation for cluster states and graph codes

Published: 01 September 2003 Publication History

Abstract

In a previous paper a straight forward construction method for quantum error correcting codes, based on graphs, has been presented. These graph codes are directly related to cluster states which have been introduced by Briegel and Raussendorf. We show that the preparation of a cluster state as well as the coding operation for a graph code, can be implemented by a logical network by only using one type of two-qubit gate, e.g. CNOT or controlled Phase, and one type of one-qubit gate, e.g. the Hadamard transform. Concerning the qubit case each vertex corresponds to an Hadamard gate and each edge corresponds to a controlled not gate.

References

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Schlingemann, D. and Werner R.F.: Quantum error-correcting codes associated with graphs. Phys. Rev. A, 65, 012308, (2001), quant-ph/0012111.
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Cleve R. and Gottesman, D.: Efficient computations of encodings for quantum error correction. Phys. Rev. A, 56, 76-83, (1997), quant-ph/9607030.
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Grassl, M.: Private communications. A table of circuits for cyclic and weakly self-dual codes can be found on the webpage: http://iaks-www.ira.uka.de/home/grassl/QECC/ Grassl, M. and Beth, T.: Cyclic quantum error-correcting codes quant-ph/9910061.
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Briegel, H.J. and Raussendorf, R.: Quantum computing via measurements only, quant-ph/0010033.
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Schlingemann, D.: Stabilizer codes can be realized as graph codes, Quant. Inf. Comp. 2, No 4, 307-323, (2002).

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    Information & Contributors

    Information

    Published In

    cover image Quantum Information & Computation
    Quantum Information & Computation  Volume 3, Issue 5
    September 2003
    92 pages

    Publisher

    Rinton Press, Incorporated

    Paramus, NJ

    Publication History

    Published: 01 September 2003
    Revised: 02 June 2003
    Received: 15 April 2002

    Author Tags

    1. CNOT phase
    2. cluster states
    3. coding opeartion

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