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 p. 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.
Polarization phase gate with a tripod atomic system / S. Rebic; D. Vitali; C. Ottaviani; P. Tombesi; M. Artoni; F.S. Cataliotti; R. Corbalan. - In: PHYSICAL REVIEW A. - ISSN 1050-2947. - STAMPA. - 70:(2004), pp. 032317-1-032317-8. [10.1103/PhysRevA.70.032317]
Polarization phase gate with a tripod atomic system
CATALIOTTI, FRANCESCO SAVERIO;
2004
Abstract
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 p. 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.
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