Quantum Walks of Correlated Photons

Albert Peruzzo, Mirko Lobino, Jonathan C. F. Matthews, Nobuyuki Matsuda, Alberto Politi, Konstantinos Poulios, Xiao-Qi Zhou, Yoav Lahini, N. Ismail, Kerstin Worhoff, Yaron Bromberg, Yaron Silberberg, Mark G. Thompson, Jeremy L. OBrien

    Research output: Contribution to journalArticleAcademicpeer-review

    665 Citations (Scopus)

    Abstract

    Quantum walks of correlated particles offer the possibility of studying large-scale quantum interference; simulating biological, chemical, and physical systems; and providing a route to universal quantum computation. We have demonstrated quantum walks of two identical photons in an array of 21 continuously evanescently coupled waveguides in a SiOxNy chip. We observed quantum correlations, violating a classical limit by 76 standard deviations, and found that the correlations depended critically on the input state of the quantum walk. These results present a powerful approach to achieving quantum walks with correlated particles to encode information in an exponentially larger state space.
    Original languageUndefined
    Pages (from-to)1500-1503
    Number of pages4
    JournalScience
    Volume329
    Issue number5998
    DOIs
    Publication statusPublished - 17 Sep 2010

    Keywords

    • quantum correletions
    • EWI-18535
    • IOMS-PIT: PHOTONICS INTEGRATION TECHNOLOGY
    • IR-73925
    • correlated particles
    • METIS-271050
    • Quantum walk

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