Quantum computation by communication

T. P. Spiller*, Kae Nemoto, Samuel L. Braunstein, W. J. Munro, P. Van Loock, G. J. Milburn

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


We present here a new approach to scalable quantum computing - a 'qubus computer' - which realizes qubit measurement and quantum gates through interacting qubits with a quantum communication bus mode. The qubits could be 'static' matter qubits or 'flying' optical qubits, but the scheme we focus on here is particularly suited to matter qubits. There is no requirement for direct interaction between the qubits. Universal two-qubit quantum gates may be effected by schemes which involve measurement of the bus mode, or by schemes where the bus disentangles automatically and no measurement is needed. In effect, the approach integrates together qubit degrees of freedom for computation with quantum continuous variables for communication and interaction. © Publishing Ltd and Deutsche Physikalische Gesellschaft.

Original languageEnglish
Article number30
Number of pages25
JournalNew Journal of Physics
Publication statusPublished - 27 Feb 2006

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