Polarization phase gate with a tripod atomic system

Details Polarization phase gate with a tripod atomic system Polarization phase gate with a tripod atomic system

2003-10-23

arxiv.org/abs/quant-ph/0310148v3

Physics

Quantum Physics

Corrected version

Scientific paper

10.1103/PhysRevA.70.032317

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

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