Practical effects in the preparation of cluster states using weak non-linearities

Peter P. Rohde, William J. Munro, Timothy C. Ralph, Peter Van Loock, Kae Nemoto

    Research output: Contribution to journalArticlepeer-review

    6 Citations (Scopus)


    We discuss experimental effects in the implementation of a recent scheme for performing bus mediated entangling operations between qubits. Here a bus mode, a strong coherent state, successively undergoes weak Kerr-type non-linear interactions with qubits. A quadrature measurement on the bus then projects the qubits into an entangled state. This approach has the benefit that entangling gates are non-destructive, may be performed non-locally, and there is no need for efficient single photon detection. In this paper we examine practical issues affecting its experimental implementation. In particular, we analyze the effects of post-selection errors, qubit loss, bus loss, mismatched coupling rates and mode-mismatch. We derive error models for these effects and relate them to realistic fault-tolerant thresholds, providing insight into realistic experimental requirements.

    Original languageEnglish
    Pages (from-to)53-67
    Number of pages15
    JournalQuantum Information and Computation
    Issue number1-2
    Publication statusPublished - 1 Jan 2008


    Dive into the research topics of 'Practical effects in the preparation of cluster states using weak non-linearities'. Together they form a unique fingerprint.

    Cite this