Quantum phase-gate operation based on nonlinear optics: Full quantum analysis

C. Ottaviani*, S. Rebić, D. Vitali, P. Tombesi

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    62 Citations (Scopus)

    Abstract

    We present a full quantum treatment of a five-level atomic system coupled to two quantum and two classical light fields. The two quantum fields undergo a cross-phase-modulation induced by electromagnetically induced transparency. The performance of this configuration as a two-qubit quantum phase gate for traveling single photons is examined. A trade-off between the size of the conditional phase shift and the fidelity of the gate is found. Nonetheless, a satisfactory gate performance is still found to be possible in the transient regime, corresponding to a fast gate operation.

    Original languageEnglish
    Article number010301
    Pages (from-to)010301-1-010301-4
    Number of pages4
    JournalPhysical Review A - Atomic, Molecular, and Optical Physics
    Volume73
    Issue number1
    DOIs
    Publication statusPublished - 2006

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