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Publication - Dr Anthony Laing

    Observation of Quantum Interference as a Function of Berry's Phase in a Complex Hadamard Optical Network

    Citation

    Laing, A, Lawson, T, Lopez, EM & O'Brien, JL, 2012, ‘Observation of Quantum Interference as a Function of Berry's Phase in a Complex Hadamard Optical Network’. Physical Review Letters, vol 108., pp. -

    Abstract

    Emerging models of quantum computation driven by multiphoton quantum interference, while not universal, may offer an exponential advantage over classical computers for certain problems. Implementing these circuits via geometric phase gates could mitigate requirements for error correction to achieve fault tolerance while retaining their relative physical simplicity. We report an experiment in which a geometric phase is embedded in an optical network with no closed loops, enabling quantum interference between two photons as a function of the phase.

    Full details in the University publications repository