Polarization phase gate with a tripod atomic system

By S. Rebic, D. Vitali, Carlo Ottaviani, Paolo Tombesi, M. Artoni, F. Cataliotti, Ramón Corbalán. 2003

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We analyze the nonlinear optical response of a four-level atomic system driven into a tripod configuration. The large cross-Kerr nonlinearities that occur in such a system are shown to produce nonlinear phase shifts of order $\ensuremath{\pi}$. Such a substantial shift may be observed in a cold atomic gas in a magneto-optical trap where it could be feasibly exploited towards the realization of a polarization quantum phase gate. The experimental feasibility of such a gate is here examined in detail.

Subfields: Artificial Intelligence, Atomic and Molecular Physics, and Optics

View Paper: https://www.semanticscholar.org/paper/d7e4ca9a23423122a675ad6a6cf6639f3b5b0c5e